Smooth rear tire WITH LINER 13 x 5.0-6 for Walker Mower replaces 7035-1. The tire liner is a permanent, self healing polyurethane rubber that is securely adhered to the inside of the tire casing. Tire liner heals over cuts, punctures and penetrating objects up to 3/8" in diameter. Tire liner offers sidewall protection as well as protection for the tread face area of the tire.