 On any of Coker's tires with custom sidewall such as a whitewall or a redline, the particular sidewall treatment is actually a part of the manufacturing process, instead of manufacturing a tire, then applying the sidewall treatment after the fact.In 1994, Coker Tire released a radial tire with a wide whitewall, which was a first of its kind.Coker now sells many brands that offer whitewall radial tires, and distributes a modern radial tire that has the narrow tread profile and distinct shoulders of a vintage bias ply tire.