SportRack Spare Tire Bike Rack Attaches to spare tire or trailer for easy bike transport Rotating clamps with rubber padding holds the bike securely Includes locks to secure the bike to rack and rack to the vehicle Can accommodate oversized top tubes (2 1/2" or less) DO NOT install on a trailer or other towed vehicle Please check the fit for your vehicle in the fit guide located in the Product Details area. Mounts onto Standard spare tires that have a minimum hub diameter of 2.125"