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We've been running 315's on the factory wheels since the day we bought our '19. No rubbing anywhere. Even while still on the factory suspension and fully crossed and stuffed. The factory wheels are kind of narrow though at 7.5". I don't think I'd want to put anything bigger than a 315 on them - and in fact, chose the 315 over a 35x12.50 for that reason.
I'll get new wheels when I put 37's on it, not because of backspacing but because of wheel width.
My LJ, even with 3.6" backspaced wheels (Pintlers), 35x12.50's rub the Swayloc arms at full lock (even with a couple washers under each stop). After a dozen years of running it like that I finally added some 3/4" spacers a few years ago. No more rubbing. But, at only 2.9" backspace now, I expect to go through ball joints, even faster...
- DAA
I'll get new wheels when I put 37's on it, not because of backspacing but because of wheel width.
My LJ, even with 3.6" backspaced wheels (Pintlers), 35x12.50's rub the Swayloc arms at full lock (even with a couple washers under each stop). After a dozen years of running it like that I finally added some 3/4" spacers a few years ago. No more rubbing. But, at only 2.9" backspace now, I expect to go through ball joints, even faster...
- DAA
