I did quick measurements to the bumper when I put the lift on mine, just to get a guess. but I was already running 245/75-16's on Moab wheels. I measured out at 19.5" all the way around to the bottom of the bumper and about 24.25 after the lift, not to bad for a used RE 3.5" lift, still got 4.75" off of it, and now I have 265's on the the same wheels I have no idea what the measurement is now.