Yeah, I understand the premise behind the Kleen wheels thing, and although vented, I think they'd keep too much heat around the brake rotor. I myself have this problem on the Audi 4000 quattro with stock wheels (Ronal R8's turbine style) and you just have to stay on top of it. I usually hose off the wheels between washes if they get too nasty- but only after they've cooled down. One option is to possibly try some different brake pads. I hear the Axxis metalmasters don't throw too much brake dust, but they can kinda work on the rotors some. Anyhoo, food for thought. Good luck.