i ran 31's with 2" shackles and they would rub going over speed bumps, but my old leaf's where really sagged out, if you wanna run 32's i get a set of shackles and the add-a-leaf kit from rancho (if you dont have the money to get a full set of lift springs) and you should work out just fine, that oughta be about 3.5 " of total lift