My $.02 I tried Wheel Wax a while back and thought it had no effect whatsoever. I use Zaino on my cars, and Zaino on the wheels seems to work the best. Most of the brake dust rinses off and the rest is taken care of by a soft wheel brush (a Meguiars one from the auto parts store). In between I would use a Cali duster (a knockoff, actually) on my M68s. On my E46, though, the biggest change came when I switched to PBR pads that came in the E46 Brake Pack from Turner. Not much dust; same brake feel and stopping power. My E30 has Ronal LS wheels (think basketweaves). That car has BMW pads so the wheels do dust up. When I clean them I use, in addition to the wheel brush, a baby bottle brush (dollar store) to get in between the spokes. It would drive me nuts is this was a daily driver, though.