Correcting speedo error
08-29-2007, 12:17 AM
#31
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.
08-29-2007, 12:17 AM
#32
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.
08-29-2007, 12:17 AM
#33
Guest
Posts: n/a
Re: Correcting speedo error
>>
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.
>>
>>budman wrote:
>>
>>Looks at subject, pictures Borat in a green thong/speedo.
>>Pokes eyes with pen.
>>
>>> A GPS is as accurate at calculating your vehicle speed as is a
>>> 'certified' speedo in a police car. So when the speedometer in my
>>> 2006 Liberty was registering 107 kph when the GPS was showing 120
>>> kph, I mentioned this at my next service interval. The mechanic came
>>> up with a relatively easy fix. He re-programmed the computer to make
>>> it think I had different sized tires on the car. He got it dead on.
>>> However, the odometer still registers less kilometers than the GPS
>>> records. I have verified the GPS odometer with the markers along the
>>> highway.
>>>
>>> Can anyone confirm that electronically altering the speedometer
>>> reading would not necessarily change the odometer as well?
>>
>>Depends on what got reprogrammed. Sometimes there are different offset
>>values for the spedometer and odometer, both need to be changed.
>>I don't have the manual for your Jeeps computer, so I can't tell you if
>>it has two locations.
Thanks for that Doug. I'll mention that when it goes in for service next.
08-29-2007, 09:32 AM
#34
Guest
Posts: n/a
Re: Correcting speedo error
budman@frozenorth.ca wrote:
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
08-29-2007, 09:32 AM
#35
Guest
Posts: n/a
Re: Correcting speedo error
budman@frozenorth.ca wrote:
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
08-29-2007, 09:32 AM
#36
Guest
Posts: n/a
Re: Correcting speedo error
budman@frozenorth.ca wrote:
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
08-29-2007, 09:32 AM
#37
Guest
Posts: n/a
Re: Correcting speedo error
budman@frozenorth.ca wrote:
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
>
> Since I got my Liberty CRD a year ago, I have kept track of every drop of fuel
> put in the tank. I use K-Jon Vehicle Record System that calculates among many
> other things, my KPL, or kilometers per litre. I then take that figure & go to
> http://www.onlineconversion.com/fuel_consumption.htm where I convert it to miles
> per gallon (UK) which is the same as 'old guys' used to use in Canada. It was
> only after I drove back to the Michigan NASCAR race on Tuesday that it came to
> light that I HAD to be getting better fuel economy than VRS indicated.
>
> I drove round trip 588 km and still had 1/4 tank left when we got back to
> London. This was according to the vehicle odometer. However, the GPS said we
> drove 658 km. I have since checked known distances and the GPS is dead nuts.
> The vehicle odometer is approx. 12% off, for talk-sake. Of course, that means
> that I will theoretically be able to drive 12% further before my warranty runs
> out! However, I think I'll mention this at my 30K maint. visit. If they think
> it warrants fixing, then let them find the solution. If they are content with
> the current situation, then so be it.
>
> For the record, my KPL on that trip was 9.79, or 11.0 if bumped 12%. That
> converts to 23 mpg / 25.9 mpg US. - OR- 27.7 / 31 mpg Canadian. I don't think
> that's too bad for driving 65-70 mph for the most part.
>
Now, it's never been illegal to correct your odometer readings if they
are incorrect. Rolling back odometers is another matter, but if you have
the experimentation and documentation that would hold up in a court
case, I'm sure you'd be fine, but then, there really would be no need to
roll it back, anyway.
The manufacturers generally put the error on the side of showing more
miles than you've actually driven, claiming it's impossible to get a
"dead nuts" as you put it...or "***** on", etc. reading. However, it
most certainly IS possible but the auto manufacturers probably save
millions in cutting your warranty 5, 8, 10-12% short. Look for
inaccurate odometers even in vehicles equipped with GPS systems.
Since your situation is the opposite of the usual problem and since now
your speedo is correct, I'm not sure that most people would jump through
hoops or even mention it. I'd like to buy your used vehicles, though!
tw
08-29-2007, 09:41 PM
#38
Guest
Posts: n/a
Re: Correcting speedo error
budman@frozenorth.ca proclaimed:
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
Misunderstanding. Correcting your speedometer/odometer to either more
accurately or even less accurately isn't in any way shape or form
illegal. It is only if you alter the odometer reading to indicate a
lower mileage than accumulated. Grey areas possible in somve venues if
you intentionally alter the speedometer/odometer to accumulate waaay
less mileage than is being done. Further grey area if after having
observed an odometer that is overly accumulating you alter it backwards
to indicate the actual mileage--in some instances lawsuit level grey
area if it causes your warranty to expire early and you are using stock
tires and running gear. Dunno if anyone has collected on one of those
lawsuits, but they have been filed where there appears to be a pattern
of readings in the wrong direction.
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
Misunderstanding. Correcting your speedometer/odometer to either more
accurately or even less accurately isn't in any way shape or form
illegal. It is only if you alter the odometer reading to indicate a
lower mileage than accumulated. Grey areas possible in somve venues if
you intentionally alter the speedometer/odometer to accumulate waaay
less mileage than is being done. Further grey area if after having
observed an odometer that is overly accumulating you alter it backwards
to indicate the actual mileage--in some instances lawsuit level grey
area if it causes your warranty to expire early and you are using stock
tires and running gear. Dunno if anyone has collected on one of those
lawsuits, but they have been filed where there appears to be a pattern
of readings in the wrong direction.
08-29-2007, 09:41 PM
#39
Guest
Posts: n/a
Re: Correcting speedo error
budman@frozenorth.ca proclaimed:
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
Misunderstanding. Correcting your speedometer/odometer to either more
accurately or even less accurately isn't in any way shape or form
illegal. It is only if you alter the odometer reading to indicate a
lower mileage than accumulated. Grey areas possible in somve venues if
you intentionally alter the speedometer/odometer to accumulate waaay
less mileage than is being done. Further grey area if after having
observed an odometer that is overly accumulating you alter it backwards
to indicate the actual mileage--in some instances lawsuit level grey
area if it causes your warranty to expire early and you are using stock
tires and running gear. Dunno if anyone has collected on one of those
lawsuits, but they have been filed where there appears to be a pattern
of readings in the wrong direction.
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
Misunderstanding. Correcting your speedometer/odometer to either more
accurately or even less accurately isn't in any way shape or form
illegal. It is only if you alter the odometer reading to indicate a
lower mileage than accumulated. Grey areas possible in somve venues if
you intentionally alter the speedometer/odometer to accumulate waaay
less mileage than is being done. Further grey area if after having
observed an odometer that is overly accumulating you alter it backwards
to indicate the actual mileage--in some instances lawsuit level grey
area if it causes your warranty to expire early and you are using stock
tires and running gear. Dunno if anyone has collected on one of those
lawsuits, but they have been filed where there appears to be a pattern
of readings in the wrong direction.
08-29-2007, 09:41 PM
#40
Guest
Posts: n/a
Re: Correcting speedo error
budman@frozenorth.ca proclaimed:
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
Misunderstanding. Correcting your speedometer/odometer to either more
accurately or even less accurately isn't in any way shape or form
illegal. It is only if you alter the odometer reading to indicate a
lower mileage than accumulated. Grey areas possible in somve venues if
you intentionally alter the speedometer/odometer to accumulate waaay
less mileage than is being done. Further grey area if after having
observed an odometer that is overly accumulating you alter it backwards
to indicate the actual mileage--in some instances lawsuit level grey
area if it causes your warranty to expire early and you are using stock
tires and running gear. Dunno if anyone has collected on one of those
lawsuits, but they have been filed where there appears to be a pattern
of readings in the wrong direction.
>>>
>>>Steve wrote:
>>>
>>>
>>>>Mike wrote:
>>>>
>>>>
>>>>><budman@frozenorth.ca> wrote in message
>>>>>news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.c om...
>>>>>
>>>>>
>>>>>>A GPS is as accurate at calculating your vehicle speed as is a
>>>>>>'certified'
>>>>>>speedo in a police car. So when the speedometer in my 2006 Liberty was
>>>>>>registering 107 kph when the GPS was showing 120 kph, I mentioned
>>>>>>this at my
>>>>>>next service interval. The mechanic came up with a relatively easy
>>>>>>fix. He
>>>>>>re-programmed the computer to make it think I had different sized
>>>>>>tires on the
>>>>>>car. He got it dead on. However, the odometer still registers less
>>>>>>kilometers
>>>>>>than the GPS records. I have verified the GPS odometer with the
>>>>>>markers along
>>>>>>the highway.
>>>>>>
>>>>>>Can anyone confirm that electronically altering the speedometer
>>>>>>reading would
>>>>>>not necessarily change the odometer as well?
>>>>>>
>>>>>>Thanks
>>>>>>
>>>>>
>>>>> Of course it would alter the odometer too
>>>>
>>>>
>>>>And that would be illegal no?
>>>>
>>>>Steve
>>>>
>>>
>>>No. It's never been illegal to correct your speedometer.
>>>
>>>tw
>
>
> Illegal to alter the odometer reading though. I even pulled the needle off the
> speedometer on my old Cherokee to re-adjust the speed to match a radar gun that
> was being operated in the passenger seat by a police officer.
Misunderstanding. Correcting your speedometer/odometer to either more
accurately or even less accurately isn't in any way shape or form
illegal. It is only if you alter the odometer reading to indicate a
lower mileage than accumulated. Grey areas possible in somve venues if
you intentionally alter the speedometer/odometer to accumulate waaay
less mileage than is being done. Further grey area if after having
observed an odometer that is overly accumulating you alter it backwards
to indicate the actual mileage--in some instances lawsuit level grey
area if it causes your warranty to expire early and you are using stock
tires and running gear. Dunno if anyone has collected on one of those
lawsuits, but they have been filed where there appears to be a pattern
of readings in the wrong direction.