I'm planning on purchasing a set of BFG At's before the snow falls. I've
been planning on getting 235/75/15 but my friend says I should go with
30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the rear
end is 3.73
3 questions:
1. Will I notice much of a difference in fuel economy going from the
225's to the 30's?
2. Can I still use my original spare if I go with 235 or 30? I know I
should have a full size spare but I don't do much offroading and right
now I can't afford an extra tire.
3. Can I fit one of the above sizes, on a steel rim in the stock spare
location, inside the back or will I need to mount it on the exterior?

Thanks in advance

Mort

 

On Sat, 06 Sep 2003 14:19:22 -0400, jm <jmorton@on.aibn.com> wrote:

>I'm planning on purchasing a set of BFG At's before the snow falls. I've
>been planning on getting 235/75/15 but my friend says I should go with
>30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the rear
>end is 3.73
>3 questions:
>1. Will I notice much of a difference in fuel economy going from the
>225's to the 30's?
>2. Can I still use my original spare if I go with 235 or 30? I know I
>should have a full size spare but I don't do much offroading and right
>now I can't afford an extra tire.
>3. Can I fit one of the above sizes, on a steel rim in the stock spare
>location, inside the back or will I need to mount it on the exterior?
>
>Thanks in advance
>
>Mort

I have 30x9.5's on my XJ.
I fills up the wheel well, and it would likely rub under full
articulation.
No rubbing on full turns though.

If you check the link below, the diameter difference between
235's and 30's aint' much.

Select metric tire conversion.

http://4lo.com/


Tom
The Ox (Oxide) '86 CJ7, 258 I6, 4 spd, 3" Lift, 33x12.5 BFG's
'96 XJ PMS
'01 ZJ TS

Reply to: Group, or tneedham@spleen.acd.net
Remove my spleen to reply. (please be gentle)
Home page: http://userdata.acd.net/tneedham/default.htm
Jeep stuff: http://userdata.acd.net/tneedham/jeep.html
It aint much, but it's mine.

 

On Sat, 06 Sep 2003 14:19:22 -0400, jm <jmorton@on.aibn.com> wrote:

>I'm planning on purchasing a set of BFG At's before the snow falls. I've
>been planning on getting 235/75/15 but my friend says I should go with
>30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the rear
>end is 3.73
>3 questions:
>1. Will I notice much of a difference in fuel economy going from the
>225's to the 30's?
>2. Can I still use my original spare if I go with 235 or 30? I know I
>should have a full size spare but I don't do much offroading and right
>now I can't afford an extra tire.
>3. Can I fit one of the above sizes, on a steel rim in the stock spare
>location, inside the back or will I need to mount it on the exterior?
>
>Thanks in advance
>
>Mort

I have 30x9.5's on my XJ.
I fills up the wheel well, and it would likely rub under full
articulation.
No rubbing on full turns though.

If you check the link below, the diameter difference between
235's and 30's aint' much.

Select metric tire conversion.

http://4lo.com/


Tom
The Ox (Oxide) '86 CJ7, 258 I6, 4 spd, 3" Lift, 33x12.5 BFG's
'96 XJ PMS
'01 ZJ TS

Reply to: Group, or tneedham@spleen.acd.net
Remove my spleen to reply. (please be gentle)
Home page: http://userdata.acd.net/tneedham/default.htm
Jeep stuff: http://userdata.acd.net/tneedham/jeep.html
It aint much, but it's mine.

 

Thanks for the help. I think I'm going to go with the 30's as long as
they aren't too expensive.

Mort

Eric wrote:
>
>
> jm wrote:
>
>> I'm planning on purchasing a set of BFG At's before the snow falls.
>> I've been planning on getting 235/75/15 but my friend says I should go
>> with 30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the
>> rear end is 3.73
>> 3 questions:
>> 1. Will I notice much of a difference in fuel economy going from the
>> 225's to the 30's?
>
> I made a similar upgrade in my ZJ and I lost about one mpg. I thought
> it would go up because the larger diameter, but the more aggresive tread
> pattern countered that. It depends on how aggressive yout current tires
> are.
>
>> 2. Can I still use my original spare if I go with 235 or 30? I know I
>> should have a full size spare but I don't do much offroading and right
>> now I can't afford an extra tire.
>
> It's always best to have the same exact diameter tire on. I drove my ZJ
> once with the smaller spare, a 235, with the rest 30s and I could feel a
> vibration pick up around 60 mph and it pulled heavily to that one side.
> It can really damage your diffs if you have too great a tiresize
> differential.
>
>> 3. Can I fit one of the above sizes, on a steel rim in the stock spare
>> location, inside the back or will I need to mount it on the exterior?
>
> If you're wheels are 15x7 which they most likely are, you can go as high
> as 31x10 and still fit the wheel. As far as in stock location for the
> spare, I don't think I could fit more than a 30 in my XJ which is the
> biggest tire you are considering. I just got my XJ and it cam with
> 215/70s on it! I plan on upgrading those as soon as possible. I think
> they're soo small that the speedo reads faster than I'm actually going.
> lol Anyway, good luck!
>
>>
>> Thanks in advance
>>
>> Mort
>>
>

 

Thanks for the help. I think I'm going to go with the 30's as long as
they aren't too expensive.

Mort

Eric wrote:
>
>
> jm wrote:
>
>> I'm planning on purchasing a set of BFG At's before the snow falls.
>> I've been planning on getting 235/75/15 but my friend says I should go
>> with 30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the
>> rear end is 3.73
>> 3 questions:
>> 1. Will I notice much of a difference in fuel economy going from the
>> 225's to the 30's?
>
> I made a similar upgrade in my ZJ and I lost about one mpg. I thought
> it would go up because the larger diameter, but the more aggresive tread
> pattern countered that. It depends on how aggressive yout current tires
> are.
>
>> 2. Can I still use my original spare if I go with 235 or 30? I know I
>> should have a full size spare but I don't do much offroading and right
>> now I can't afford an extra tire.
>
> It's always best to have the same exact diameter tire on. I drove my ZJ
> once with the smaller spare, a 235, with the rest 30s and I could feel a
> vibration pick up around 60 mph and it pulled heavily to that one side.
> It can really damage your diffs if you have too great a tiresize
> differential.
>
>> 3. Can I fit one of the above sizes, on a steel rim in the stock spare
>> location, inside the back or will I need to mount it on the exterior?
>
> If you're wheels are 15x7 which they most likely are, you can go as high
> as 31x10 and still fit the wheel. As far as in stock location for the
> spare, I don't think I could fit more than a 30 in my XJ which is the
> biggest tire you are considering. I just got my XJ and it cam with
> 215/70s on it! I plan on upgrading those as soon as possible. I think
> they're soo small that the speedo reads faster than I'm actually going.
> lol Anyway, good luck!
>
>>
>> Thanks in advance
>>
>> Mort
>>
>

 

Well ... my 96 XJ does not function well at all in snow with my 235s. It's
way too light and tends to float ... the 225s snows work much better. And
when they're done, I'll likely go even narrower with the snows.

"Mort" <jmorton@on.aibn.nospamcom> wrote in message
news:PT67b.732$Gr.16536@read1.cgocable.net...
> Thanks for the help. I think I'm going to go with the 30's as long as
> they aren't too expensive.
>
> Mort
>
> Eric wrote:
> >
> >
> > jm wrote:
> >
> >> I'm planning on purchasing a set of BFG At's before the snow falls.
> >> I've been planning on getting 235/75/15 but my friend says I should go
> >> with 30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the
> >> rear end is 3.73
> >> 3 questions:
> >> 1. Will I notice much of a difference in fuel economy going from the
> >> 225's to the 30's?
> >
> > I made a similar upgrade in my ZJ and I lost about one mpg. I thought
> > it would go up because the larger diameter, but the more aggresive tread
> > pattern countered that. It depends on how aggressive yout current tires
> > are.
> >
> >> 2. Can I still use my original spare if I go with 235 or 30? I know I
> >> should have a full size spare but I don't do much offroading and right
> >> now I can't afford an extra tire.
> >
> > It's always best to have the same exact diameter tire on. I drove my ZJ
> > once with the smaller spare, a 235, with the rest 30s and I could feel a
> > vibration pick up around 60 mph and it pulled heavily to that one side.
> > It can really damage your diffs if you have too great a tiresize
> > differential.
> >
> >> 3. Can I fit one of the above sizes, on a steel rim in the stock spare
> >> location, inside the back or will I need to mount it on the exterior?
> >
> > If you're wheels are 15x7 which they most likely are, you can go as high
> > as 31x10 and still fit the wheel. As far as in stock location for the
> > spare, I don't think I could fit more than a 30 in my XJ which is the
> > biggest tire you are considering. I just got my XJ and it cam with
> > 215/70s on it! I plan on upgrading those as soon as possible. I think
> > they're soo small that the speedo reads faster than I'm actually going.
> > lol Anyway, good luck!
> >
> >>
> >> Thanks in advance
> >>
> >> Mort
> >>
> >
>

 

Well ... my 96 XJ does not function well at all in snow with my 235s. It's
way too light and tends to float ... the 225s snows work much better. And
when they're done, I'll likely go even narrower with the snows.

"Mort" <jmorton@on.aibn.nospamcom> wrote in message
news:PT67b.732$Gr.16536@read1.cgocable.net...
> Thanks for the help. I think I'm going to go with the 30's as long as
> they aren't too expensive.
>
> Mort
>
> Eric wrote:
> >
> >
> > jm wrote:
> >
> >> I'm planning on purchasing a set of BFG At's before the snow falls.
> >> I've been planning on getting 235/75/15 but my friend says I should go
> >> with 30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the
> >> rear end is 3.73
> >> 3 questions:
> >> 1. Will I notice much of a difference in fuel economy going from the
> >> 225's to the 30's?
> >
> > I made a similar upgrade in my ZJ and I lost about one mpg. I thought
> > it would go up because the larger diameter, but the more aggresive tread
> > pattern countered that. It depends on how aggressive yout current tires
> > are.
> >
> >> 2. Can I still use my original spare if I go with 235 or 30? I know I
> >> should have a full size spare but I don't do much offroading and right
> >> now I can't afford an extra tire.
> >
> > It's always best to have the same exact diameter tire on. I drove my ZJ
> > once with the smaller spare, a 235, with the rest 30s and I could feel a
> > vibration pick up around 60 mph and it pulled heavily to that one side.
> > It can really damage your diffs if you have too great a tiresize
> > differential.
> >
> >> 3. Can I fit one of the above sizes, on a steel rim in the stock spare
> >> location, inside the back or will I need to mount it on the exterior?
> >
> > If you're wheels are 15x7 which they most likely are, you can go as high
> > as 31x10 and still fit the wheel. As far as in stock location for the
> > spare, I don't think I could fit more than a 30 in my XJ which is the
> > biggest tire you are considering. I just got my XJ and it cam with
> > 215/70s on it! I plan on upgrading those as soon as possible. I think
> > they're soo small that the speedo reads faster than I'm actually going.
> > lol Anyway, good luck!
> >
> >>
> >> Thanks in advance
> >>
> >> Mort
> >>
> >
>

 

"bowgus" <Bowgus@rogers.com> wrote in message
news:4f97b.196939$_V.135658@news04.bloor.is.net.ca ble.rogers.com...
> Well ... my 96 XJ does not function well at all in snow with my 235s. It's
> way too light and tends to float ... the 225s snows work much better. And
> when they're done, I'll likely go even narrower with the snows.

What's 'snow'?
__
Steve
Texas
(gloat)
..

 

"bowgus" <Bowgus@rogers.com> wrote in message
news:4f97b.196939$_V.135658@news04.bloor.is.net.ca ble.rogers.com...
> Well ... my 96 XJ does not function well at all in snow with my 235s. It's
> way too light and tends to float ... the 225s snows work much better. And
> when they're done, I'll likely go even narrower with the snows.

What's 'snow'?
__
Steve
Texas
(gloat)
..

 

Which tires do you have? I'm interested in the BFG AT's over the Mud
Terrains because the AT's are "Severe Snow Rated" and everybody I've
talked to said they were great in the snow. I know the difference
between my crappy all terrain generic tires aren't nearly as good in the
snow as the Goodyear AT's on my girlfriends XJ and they aren't supposed
to be anywhere near as good as the BFG AT's. For those who are running
BFG AT's in a snowy climate how do you like them?

Mort

bowgus wrote:
> Well ... my 96 XJ does not function well at all in snow with my 235s. It's
> way too light and tends to float ... the 225s snows work much better. And
> when they're done, I'll likely go even narrower with the snows.
>
> "Mort" <jmorton@on.aibn.nospamcom> wrote in message
> news:PT67b.732$Gr.16536@read1.cgocable.net...
>
>>Thanks for the help. I think I'm going to go with the 30's as long as
>>they aren't too expensive.
>>
>>Mort
>>
>>Eric wrote:
>>
>>>
>>>jm wrote:
>>>
>>>
>>>>I'm planning on purchasing a set of BFG At's before the snow falls.
>>>>I've been planning on getting 235/75/15 but my friend says I should go
>>>>with 30's. I've got a 00 XJ with a 4.0 and auto. I'm pretty sure the
>>>>rear end is 3.73
>>>>3 questions:
>>>>1. Will I notice much of a difference in fuel economy going from the
>>>>225's to the 30's?
>>>
>>> I made a similar upgrade in my ZJ and I lost about one mpg. I thought
>>>it would go up because the larger diameter, but the more aggresive tread
>>>pattern countered that. It depends on how aggressive yout current tires
>>>are.
>>>
>>>
>>>>2. Can I still use my original spare if I go with 235 or 30? I know I
>>>>should have a full size spare but I don't do much offroading and right
>>>>now I can't afford an extra tire.
>>>
>>>It's always best to have the same exact diameter tire on. I drove my ZJ
>>>once with the smaller spare, a 235, with the rest 30s and I could feel a
>>>vibration pick up around 60 mph and it pulled heavily to that one side.
>>>It can really damage your diffs if you have too great a tiresize
>>>differential.
>>>
>>>
>>>>3. Can I fit one of the above sizes, on a steel rim in the stock spare
>>>>location, inside the back or will I need to mount it on the exterior?
>>>
>>>If you're wheels are 15x7 which they most likely are, you can go as high
>>>as 31x10 and still fit the wheel. As far as in stock location for the
>>>spare, I don't think I could fit more than a 30 in my XJ which is the
>>>biggest tire you are considering. I just got my XJ and it cam with
>>>215/70s on it! I plan on upgrading those as soon as possible. I think
>>>they're soo small that the speedo reads faster than I'm actually going.
>>>lol Anyway, good luck!
>>>
>>>
>>>>Thanks in advance
>>>>
>>>>Mort
>>>>
>>>
>
>