The Greenball Towmaster Radial Special Trailer Tire is a special purpose trailer tire designed specifically for use on travel trailers, pop-up campers, boat trailers and fifth wheel trailers used for hauling everything from race horses to racecars. The Greenball Towmaster Radial Special Trailer Tire was developed to make towing a trailer more enjoyable and more economical while making it easier to take your big ''toys'' with you on the weekends. Special purpose trailer tires are not intended to be used on cars or light trucks. On the outside, the Greenball Towmaster Radial Special features a rounded profile to enhance ride quality, and a symmetric tread design with a center rib that provides constant rubber-to-road contact that delivers dependable highway stability, traction and long lasting wear. These are towing accessories you can't do without!