depends. 245/70 should fit with no modification apart from the lift. some have put 265/70 but have needed to trim the fenderwell and/or grind the pinch weld away due to rubbing issues. beyond that i have no idea, but there are about a zillion threads on the subject if you've got the time to dig through them.Alright, thanks.
What are the biggest tires i can put with that?