Just like Wandell is sayimg, the further out or the more offset your wheels go from stock, the less diameter you can run. I run a 33x12.5 Mickey ATZ on a 20x9 KMC Hoss wheel with a 4.5" BS and -12mm offset. I had a ton of trimming to do even with my 2.5" level and I am almost touching the well. The further out the tire sticks, the further into the truck the wheel will come when you turn