Double Coin's two all-steel ST Radials come in 16" sizes and are designed for RV, fifth wheel, and other utility trailers. The tires offer a large steel casing that allows for heavier carrying capacity and optimized tread depth for reduced heat build up. Additional features include wide shoulders for improved stability. They are designed to expand on the success of the popular RT500 model, which includes the high-demand sizes of ST235/80R16 and ST235/85R16, designed explicitly for high-speed trailer use.