I have a 2011 JKU Sport but I had the dealer put the Sahara tires and rims on when I got it. I've read just about everything I can but keep getting conflicting answers on how many inches my tires are. I had the owner of COP4x4 tell me they are 30s then I read 31s and also people saying they are 32s. I want to put 33s on it but I want to know how much of a height difference it will be. Also, once and for all.....with 33s, do I have to put a lift or no? Different answers on that as well. I will not be off roading but dont want to rub anything on anywhere. Thanks so much for any help.