Pretty much everyone gets the Nittos in 285/60/18 which is the largest that will fit on the stock wheels without lifting the truck. They ususally require you to trim the corner off the inside of the front bumper to keep them from rubbing, but it only takes 30 seconds with a pocket knife and it totally undetectable. Check out pictures of the Yokos and the Nittos in my gallery. The Nittos are the ones that look like truck tires and the Yokos are teh ones that look like sportscar tires.