Loadstar Bias Trailer Tires are belted to combine the strength of a bias tire with the durability of a radial tire. Made from an advanced rubber compound for low rolling resistance. Flatter tread offers stability. Strong quality galvanized steel rim and heavy-duty sidewall construction are designed to stand up to the abuse that trailers often receive. Deep long-lasting tread lets you travel for many worry-free miles. Low rolling resistance Galvanized steel rim | Americana Tire and Wheel Kenda Loadstar 175/80 x 13B Bias Trailer Tire w/ 5-Lug Galvanized Spoke Rim