Protect your vehicle's spare tire from the environment with these durable wheel covers by ADCO, featuring Diamond Plated Vinyl design. Tires left exposed to the sun and other environmental hazards will deteriorate much faster than you might think and could potentially lead to on-road blowouts as well as costly replacement. ADCO's Spare Tire Covers are a cost effective way to prolong the life of your tires and reduce expenses long term. To order the best fitting cover for your tires, you will need your tire's overall diameter (including rim and rubber).