It's kinda hard to say.... I mean most guys run those tires on the stock wheels and don't have that much rubbing, besides foglight doors... however I am running a 4.0 backspace with firestone tires and it rubs pretty good. After I did all the cutting they don't rub much anymore... but I like how they stick out; which looks cool. Staying close the stock wheels in backspace 5.5 is your best bet for no rubbing.
Bennett