18x9.5 +12
I have the same brakes and offset wheels as 72bluNblu, 18x9 +35 and the Dr Diff 13" brakes. 275-35-18 Continental ExtremeContact DW Its absolutely the furthest out you can push the wheels and get away with it. I have the front brackets for the fenders pushed all the way out and I had to replace the fender bolts in the back of the wheelwell with pan heads because they rubbed on the tire while turning.