The Endurance is Goodyear's special purpose trailer tire developed specifically for use on travel trailers, pop-up campers, boat trailers, toy haulers and fifth wheels. Endurance trailer tires are designed with durability in mind to help make towing a trailer less stressful by reducing impact-related failures experienced during use.Special purpose trailer tires are not intended to be used on cars or light trucks.Endurance trailer tires feature a rounded profile to help cushion the trailer's ride, and the symmetric tread design with closely spaced ribs provide constant rubber-to-road contact for straight tracking, dependable highway stability and long-lasting wear. The tire's internal structure includes twin steel belts with a two-ply nylon reinforcement to stabilize the tread, increasing traction and durability. The Endurance features a polyester cord body to help smooth out the trailer's ride, and a scuff guard is molded into the sidewall to further increase durability by resisting damage from contact with curbs during parking lot maneuvers.Special purpose trailer tires are not UTQG rated.