Find a huge selection of Tire Mounts to mount an oversized spare tire in the bed of your 2020-2023 Chevy/GMC 6.6L L5P Duramax. Each unit is made from high quality materials for a secure mount and long service life. These mounts are designed to be universal and each have their own way of mounting the tire. XDP offers the best quality Tire Mounts from manufacturers like N-Fab, Titan Fuel Tanks, Addictive Desert Designs, and Dorman.