Coker introduced a new line of Excelsior tires that combines modern-day radial construction with classic appearance. Known as the Excelsior Stahl Sport Radial, this new line of tires is made to replace the old bias ply tires on vintage cars. Designed for all-season use, each steel-belted radial features a specific speed and load rating. The tires made for 16-inch wheels feature an H speed rating, while the 17-inch and larger tires feature an S rating. Compared to a bias ply tire of similar size, handling and ride quality will be greatly improved, without losing the classic look, Coker said. Twenty sizes are available with wheel diameters ranging from 16 to 21 inches.