Fabtech claims that 35-inch tires will fit with its five-inch lift. We've pushed the envelope a bit by installing 36-inch tires, especially with the weight of the winch, which reduced the five-inch lift to 451/48 inches. At full lock with the springs compressed, the outer lugs of the Swampers kiss the plastic inner fenders. It makes a racket but hasn't hurt anything. The wheels are 10 inches wide and have a stock 4.625-inch backspacing.