depending on if you've modded your truck at all,you'll have to have a lift kit on it,or they will be srubbing the arches all the time,and you may have to trim the inner lips on the rear wheel arches like i had to,depending on what off set wheels you are gonna use,and again depending on what wheels you use you may have to wind ya bump stops out on ya hubs to stop the tyres rubbing on the radius arms.