I would mount tires that called for 8" rims I would not mount tires that called for 8.5" rims altho many do it. Most 315/70-17 say 8" rims are ok and if you look at Discount tire they say 315/70-17 can be mounted on 7.5" rims so that is what I would look at.
I had a 2009 Rubicon with 17x7.5 stock wheels and the 35"KM2 fit fine. Discount Tires told me on the second set I tried to buy that they could not install on anything less than 8" wide wheel.
I now have a 2018 "RECON" Unlimited and had to get 17x9 wheels for the BFG KM3s I am adding.
I’m in the same predicament. I’m overseas and it’s hard to find someone who will ship a wheel and tire package. I’m hoping the tire shop in base will do me a solid and mount 35 X12.5 on my stock wheels.
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