This Coker Diamond 450-18 motorcycle tire fits thousands of vintage motorcycles, from classic Harley Davidsons, to customized bobbers, choppers and more. This tire features the classic Diamond tread pattern, which is authentic for 1930s through 1950s American motorcycles, and is the perfect finishing touch for a custom bike. Please note that dimensions listed tread width, section width and overall diameter are non-scientific and based on an inflated tire, mounted on a wheel. Dimensions may vary due to rim width and inflation pressure.