you can probably fit a 31 mud terrain tire on a stock rim or for a attention getting look get some 275/55r20 on some chrome wheels. Note you did not specify 2 or 4 wheel drive this is for a 2wd model. Best thing to do before buying new wheels/tires is to check the leveling kit manufacturers web site or give them a call to check the tire fitment suggestions they offer. They should be able to offer you various options of wheel/tire sizes along with the correct backspacing as to not let the tire rub your trucks fender.
