I use 15x8 pro comp rock crawler (looks exactly like cragar soft 8) with 3.75" backspacing. I've ran 31x10.5 tires with no rubbing ever, but my current 35x12.5 tires on those same wheels rubbed when turning before I put the 3" body lift on, then only the driver side rubbed on the inner fender well when turning right, now it doesn't rub at all, even when stuffed, thanks to a big hammer on the inner fender.

Eric
89 Raider V6, 35s, 5sp, welded rear, 8k winch
89 Raider 2.6 going on 84 4runner frame