Arrow Mercedes Rotary Forged Wheels wheels are as beautiful as they are technologically advanced. This wheel is engineered using a highly advanced manufacturing technology known as rotary forging to achieve both dramatic weight reduction and improved strength. This straightforward five-spoke design is available in classic chrome, matte black or elegant gunmetal with a mirror cut face. These aftermarket wheels are offered in 17, 18, 19 and 20 inch diameters, and in each of these sizes two widths are offered, one to one and a half inches apart, for those who prefer the performance advantages and muscular look of a staggered fitment. The Arrow Rotary Forged Wheel is manufactured using a highly advanced production technique called Rotary Forging. The rim of the wheels is forged at high pressure while the wheel is spun at high speed. This alters the molecular structure and enhances the strength of the alloy. The benefit is a much lighter weight than a regular cast wheel. Most importantly, the weight saving is in the outer rim of the wheel which dramatically reduces rotational mass and enhances vehicle performance.