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Unread 09-05-2012, 11:36 PM   #1
Steelo805
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31" vs 32"

Is there a noticeable difference driving on 31/10.5/r15 vs 32/11.5/r15 on 3:55 gears? The tires will be BFG TA/KOs

I do know how to use the search feature, jus couldnt find the info i wanted

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Unread 09-06-2012, 01:39 AM   #2
chris87xj
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It's about a 3% difference. Tires can wear that much over their lifespan.
I don't think you'll notice much difference with respect to the gearing.
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Unread 09-06-2012, 06:08 PM   #3
Steelo805
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Thanks and yeah that makes since but I'd also have to factor in the extra inch width..
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Unread 09-06-2012, 08:00 PM   #4
chris87xj
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I'm running 31x10.5x15 w/stock backspaced rims and stock control arms on my 96 DD xj, so know exactly what you're working with there and am fine with that small loss of turning radius but am thinking an extra inch of width might take it a bothersome state.
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Unread 09-06-2012, 08:10 PM   #5
Steelo805
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How's the power?
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Unread 09-06-2012, 08:14 PM   #6
skip11and1
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i ran steelies and 31/10.5 and then alloys and 32/11.5 and got better mpg on my old cherooke. 1.5 mpg every fill up more, I think the weight of the rims have more of a impact of the vehicle then tire size as long as your not comparing 31 vs 38 then obv the 31 will be better for vehicle performance
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Unread 09-06-2012, 08:36 PM   #7
chris87xj
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How's the power?
Fine by me, not that much difference than it was stock.
I'm no dragster but I wanna be able to pass when I need to. Also use it to tow an ATV trailer or small boat at times. No complaints.
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Unread 09-08-2012, 10:34 PM   #8
Steelo805
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Quote:
Originally Posted by skip11and1
i ran steelies and 31/10.5 and then alloys and 32/11.5 and got better mpg on my old cherooke. 1.5 mpg every fill up more, I think the weight of the rims have more of a impact of the vehicle then tire size as long as your not comparing 31 vs 38 then obv the 31 will be better for vehicle performance
So you wouldn't suggest 32s on some summit racing 15" steelies
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Unread 09-09-2012, 07:42 AM   #9
NJXJ91
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So you wouldn't suggest 32s on some summit racing 15" steelies
31x10.5 is the max usually on 3.55's
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Unread 09-09-2012, 08:24 AM   #10
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There's no real noticeable difference. It's not even much different than 235s other than at idle. I don't idle forward as much and I don't at all up minor grades. Takes a little *** to move from a stop, but not much and after that I don't notice any difference. I wouldn't hesitate to run 32s on 3.55s again.
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Unread 09-09-2012, 09:23 AM   #11
kenC
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32's on stock gears sucks imo,it wont tow for crap and with a/c on in the summer it barely wants to climb the hills,i put 4,10 gears in and im glad i did.if u live on flat ground and dont tow much u would probably be ok i would definetly get a upgraded trans cooler
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Unread 09-12-2012, 06:18 PM   #12
skip11and1
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i dont think 32's would be that much of a noticeable difference then 31's in daily drving. the only time you may notice it is trying to hold highway speeds on hills
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