31 x 10.5 15s on 8 inch Wheels - Jeep Wrangler Forum
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Old 04-07-2018, 11:54 AM
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Join Date: Jul 2010
Location: Catawissa, Mo.
Posts: 181
31 x 10.5 15s on 8 inch Wheels

I just finished installing a Rough Country 2.5 inch lift so 8 am planning to go with 31 x 10.5 15s. In the paperwork with the lift it said it was recommended for that size on stock wheels but my stock wheels are crap so I was planning to buy something like a pro comp steel wheel in a 15 x 8. The paperwork said 15 x 8 wheels with 3.75 backspace was recommended for 32s, my question is what is the downside to putting the 31s on an 8 inch wheel instead of the factory 7 inch wheels?

2000 Wrangler Sport
4.0 Litre
5 Speed
278,000 Miles
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Old 04-09-2018, 07:28 PM   #2
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Hi donecop1!

I don't really see a downside here. Tire manufacturers state that 31x10.50R-15 size tires are safely run on 7-inch to 9-inch wide wheels. I wouldn't hesitate to run that size tire on the aftermarket ProComp wheels you mentioned.

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Old 04-11-2018, 12:11 PM   #3
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Join Date: Mar 2018
Location: Norwalk ohio
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Have you looked at national wheel and tire, they have some awesome deals on jeep combos, and they say they come mounted and balanced.
99 tj, Moog zj coils front, rancho 5000x shocks, bds +2" coils rear, rear Dana 44 w/4.56, smittybuilt xrc9500 winch, 33" deegan 38 my on trail master wheels.
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