i put some spring stiffners on mine when i had the big tires on. 33's 12.5. i had to put 2 of those little things in there and it allowed me no rub. except when i was in a tight tight turn i would rub a little on the right front tire but not on the left, and it was rubbing the frame not the fender. didnt hurt nothing, i just took them off because of the amazing way it was tearing up my power steering. The pump could handle it but the power steering unit itself kept blowing seals.