The reason why some aftermarket chromed aluminum wheels fail the plating is that the base wheel is too porous. The pores trap casting dirt and machining residue and this is the space where the chrome plating fails first, and allows moisture in to finish off the failure. It is like painting over dirt.
Best bet is chrome plating over forged wheels (almost no porosity) or a very high quality casting. That is what the OEM suppliers had to do to get life out of these wheels. Some of the aftermarket gets it, most don't.
Chroming a cast aluminum wheel not engineered originally for chrome plating is a recipe for early failure.
Mark