Will 31 x 10.5 tires on 15 x 8 wheels with 3.75 backspacing fit on xj with 3 inch lift without rubbing flares/fender? Will trimming of fenders be required?
Maybe 31's would fit on a 15x7 with 5" BS, tucking nicely inside the fenders.
But, no way with the wheels you mentioned. They will definately hit the bottoms of the flares, as I am sure your tires stick out past your flares. If you want to do it anyway, just run some serious bumpstop extensions.