Simply because we know what race car drivers want and need. Specifically, to automotive wheels, using counterfeit and inferior quality material is DANGEROUS. Think of your FAMILY and YOUR life, wheels and tires are extremely important in any land moving objects. Forging provides MUCH better mechanical properties, ductility, fatigue and impact resistance because this process refines and directs the grain flow according to the shape of the piece. Almost all metals—ferrous and non-ferrous— can be forged. Any kind of steel can be used: carbon, alloy, stainless steel, steel, etc.