cated??
i honestly don't know the anser to that. they don't appear to be coated , or "laquered". i haven't tried the stuff on the ram wheels. i was under the impression, however, that they weren't coated. if they are, the rouge would take the coating off. if they are coated, just some mild soap should suffice.
BTW, if you have a 01. 5 or newer, consider "Kleen Wheels" on all four corners. i put them on ASAP when new, and the wheels get no brake dust, and stay clean, even on my dusty road.