[IROC]

I would submit that a possible reason is that white is one of those colors that matches most anything, so if you're an aftermarket wheel manufacturer and need to paint your wheels *some* color, then white is a relatively safe bet. It sets itself apart from the world of silver wheels.

Heck, Porsche did the same thing alot. Hmmm....I don't really know. Maybe white paint reduces the rotational inertia and unsprung weight of the tire and wheel package and also increases the coefficient of friction of the brake pads while simultaneously reducing the waist size of the driver? :>)

Mike