Re: Tire Size and Speedo Reading
 

The tires have a larger diameter, therefore a larger circumference. For
each rotation of the tire you will traveling farther. Therefore, for any
given speedometer reading, the larger tires will cause you to travel faster
than smaller tires would. Tell you neighbor to read his high school
geometry and physics books.

--
Jim
--
98 TJ SE
90 SJ GW
http://www.delawareja.com/gallery/JDJeep98



"John R" <john_r357@hotmail.com> wrote in message
news:77ac046e.0310080321.67d1f0a7@posting.google.c om...
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

The tires have a larger diameter, therefore a larger circumference. For
each rotation of the tire you will traveling farther. Therefore, for any
given speedometer reading, the larger tires will cause you to travel faster
than smaller tires would. Tell you neighbor to read his high school
geometry and physics books.

--
Jim
--
98 TJ SE
90 SJ GW
http://www.delawareja.com/gallery/JDJeep98



"John R" <john_r357@hotmail.com> wrote in message
news:77ac046e.0310080321.67d1f0a7@posting.google.c om...
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

The tires have a larger diameter, therefore a larger circumference. For
each rotation of the tire you will traveling farther. Therefore, for any
given speedometer reading, the larger tires will cause you to travel faster
than smaller tires would. Tell you neighbor to read his high school
geometry and physics books.

--
Jim
--
98 TJ SE
90 SJ GW
http://www.delawareja.com/gallery/JDJeep98



"John R" <john_r357@hotmail.com> wrote in message
news:77ac046e.0310080321.67d1f0a7@posting.google.c om...
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

I recently put 31x10.5 BFG AT/KOs on my 2002 TJ/X (and they do not rub, no
mater how hard I try to get them to). According to my GPS, I travel at 63.8
mph when my speedometer reads 60. The GPS is very accurate when in motion.


"John R" <john_r357@hotmail.com> wrote in message
news:77ac046e.0310080321.67d1f0a7@posting.google.c om...
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

I recently put 31x10.5 BFG AT/KOs on my 2002 TJ/X (and they do not rub, no
mater how hard I try to get them to). According to my GPS, I travel at 63.8
mph when my speedometer reads 60. The GPS is very accurate when in motion.


"John R" <john_r357@hotmail.com> wrote in message
news:77ac046e.0310080321.67d1f0a7@posting.google.c om...
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

I recently put 31x10.5 BFG AT/KOs on my 2002 TJ/X (and they do not rub, no
mater how hard I try to get them to). According to my GPS, I travel at 63.8
mph when my speedometer reads 60. The GPS is very accurate when in motion.


"John R" <john_r357@hotmail.com> wrote in message
news:77ac046e.0310080321.67d1f0a7@posting.google.c om...
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

Your friend is dyslexic:
http://go.jeep-xj.info/HowtoSpeedoGears.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

John R wrote:
>
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

Your friend is dyslexic:
http://go.jeep-xj.info/HowtoSpeedoGears.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

John R wrote:
>
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

Your friend is dyslexic:
http://go.jeep-xj.info/HowtoSpeedoGears.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

John R wrote:
>
> Please help me settle a "discussion" my neighbor and I are having. As
> most of you already know, the stock tires on my 2003 TJ Sport are
> Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> As soon as I can justify new tires, (wifey has issues) I will be
> putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> of "discussion"... I say the speedo will read less than the actual
> speed I'm travelling with the larger tires and my neighbor says the
> speedo will read more than than the actual speed. Can someone please
> chime in here? Thanks. John

Re: Tire Size and Speedo Reading
 

A BIG thank you to all who responded. I'll think of you all as I pull
the top on every one of the six "beverages" I'll be getting from the
neighbor this evening... <pffftt> <glug> ...aaahhhhh. 8^)

John





L.W.(ßill) ------ III <----------@cox.net> wrote in message news:<3F84473B.9FBDD254@cox.net>...
> Your friend is dyslexic:
> http://go.jeep-xj.info/HowtoSpeedoGears.htm
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> John R wrote:
> >
> > Please help me settle a "discussion" my neighbor and I are having. As
> > most of you already know, the stock tires on my 2003 TJ Sport are
> > Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15.
> > As soon as I can justify new tires, (wifey has issues) I will be
> > putting on 31x10.5/15, probably MT/R's or the like. Here is the topic
> > of "discussion"... I say the speedo will read less than the actual
> > speed I'm travelling with the larger tires and my neighbor says the
> > speedo will read more than than the actual speed. Can someone please
> > chime in here? Thanks. John