I am confused on mine as well..im 16 and new to all of this ...i own a 2008 sahara and am looking to buy 20'' xd hoss's but my parents wont allow me to get a lift because they think it will interphere with the warranty..do you know what the biggest size tire i am able to get without rubbing and is the bolt pattern 5x5 and what do i do about the back spacing...PLEASEE HELPPP