I have a leveling kit on my 07 and in to put 12.50's on it I would need a wheel with a -12 offset or a spacer, but rubbing in the front and back of fender well should not be a problem at all I know many people running 12.50 tires and dnt have rubbing. The problem I have is the space between my upper control arm and back side of tire is inly 3/4 of an inch. That is why I have stayed with a stock tire size.