Power King Solid Trac Premium Trailer ST205/75D15 101L COVERVIEWThe Power King Solid Trac Premium Trailer is designed for towed trailer applications. It has a reinforced bias-ply construction for strength and durability. The Solid Trac Premium Trailer features a unique tread design optimized for improved wear and four deep tread grooves for increased grip on wet surfaces. In addition, the Solid Trac Premium Trailer has solid center ribs for enhanced stability and control and sturdy sidewalls for increased strength.