Keep your spare secure with the Bass Pro Shops U-Bolt Spare-Tire Carrier. Strong 7/16 rod construction with spin-on threaded locking plates. This extra-tough, premium spare-tire carrier fits on a frame tongue or rail up to 3W. 3 of threads to fit a wide variety of frame thicknesses and wheel sizes. Find your approximate length by adding frame width, tire width, and 1 extra. Mounts 4- or 5-lug wheels. Fits 8, 10, 12, 13, 14, and most 15 wheels. Zinc-plated for exceptional ruggedness and durability. Size: 8.75. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Tire Carrier.