Billet 6061-T6 aluminum wheels are molded with a durable 4" O.D. Polyurethane tire that will not dent or give like a rubber tire. Wheels are available with or without bearings and accept 3/8" mounting hardware. Mounting width of non-bearing wheel is 1.625" wide and bearing style wheel is 1.250" wide. The key to success in a car building project is access to high quality, reasonably priced parts that get the job done right. Each Allstar part is the result of our dedication to research and development. Once a need is established, parts are designed and manufactured by talented craftsmen, many of whom are racers and hot rodders themselves. Many Allstar Performance parts are one-of-a-kind; you wont find them anywhere else