Today we're going to review part number TTWSF22515D. This is the Taskmaster ST225/75D15 Bias Trailer Tire in a Load Range D. Now, Bias Ply tire is ideal for boat trailers, stock trailers, utility trailers and campers. A bias ply tire is constructed with crisscross layers of strong nylon cords. It does use stiffer sidewalls to allow the entire tire to flex easily, and this will provide a nice… see more >