Dang... someone beat me to this... I am about to put new tires on my truck as well. A 02' 2500 HD, it has 16" wheels from factory on it. Stock size is 245 75/16 I was looking to go up in size as well. I am not sure how large I can go on that wheel. The BFG's are what tire I am putting on the truck. Anyone know the largest size I can go to, and who has them cheap?