Couple of questions:

1. What are some good heavy duty cleaners? (aside from the regular soap, good brush, etc.)

I actually got lazy since snowboarding season. finally got around washing the car, but now there's this crispy stuck on black stuff (brake dust?) that's on the rim. majority i can get off, but some of it is on it like burnt eggs on teflon.


2. how to avoid this? (obviously wash more often), but i'm talking about maybe a wax/spray? kind of like a spray on 3M protector for rims? that's an idea....

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2001 X5 4.4SP Black on Black