My Comanche has 33 in. Goodyear Duratracs and a 4.5 in Rough Country lift, things get dicey at 70. The speedometer isn't calibrated so it pegs at 85 when i'm going roughly 70. Wouldn't dare take it much faster then 70, steering gets loose, the rpms are up near 3000, the rear is so light that it gets squirrelly.