I am running 315's with 17X8 American Eagle rims (4.5 BS). I do not have any rubbing issues after doing the pinch weld mod. I do not have my leveling kit on yet either. As long as your prepared to get out the sawz all you shouldn't have any issues
Here are a couple pics of my truck without the leveling kit. I am running Americian Eagle 140 series 17x8 4.53 BS 2 offset (i think) and BFG AT's 315/70r17. Pinchweld mod and no rubbing...believe me it was deer season so I tested it out.