Gram Lights 57Dr Hub Bore Size at George Redden blog Gram Lights 57DR 18x9.5 +38 5x120 Bronze II *Set of 4* System Gram Lights 57DR Bronze 15x8 4x100 +35 Car, Truck & SUV Wheels and Gram Lights 57CR Bronze 15x8 4x100 +35 Car, Truck & SUV Wheels and. This Gram Light 57DR is the most affordable wheel made by Rays Engineering. When making this design, Rays optimized the design and construct while still ensuring proper strength and rigidity. The 57DR is a cast wheel, so it will be heavier than Forged and other Flow Formed Wheels, however, this semi gloss black wheel is meant to withstand the abuse of the track and is just as strong if not stronger than any wheel out there. Cast one piece wheel meeting JWL + R Spec 1 standards Modeled after the 57D, but exclusive to the American Market High rigidity high strength models suitable for Racing Gunblue High speed air valve included Optional center caps sold separately Made by Rays Co., Ltd. in Japan