I just ordered some 285/75R17's for my PW. 34x11.5's. From what I learned researching, true 35x12.5's will rub at full lock. I didn't want that and I don't want to use a leveling kit so I went with the 34's. Some guys say they are getting 35's on a stock PW with no rubbing, but I read a lot more against this. Also, the PW is higher than some other 2500's so you need to take that into account as well. I think the width is the biggest killer when it comes to rubbing.