There is a cleaner that you can purchase for very little money and it really works. It's called "Awesome" and it can be purchased at "Dollar Tree" stores for a buck or on ebay for much more. They make two formulas so make sure you get the yellow (looks like it has been through someone) type. Spray this on your aluminum wheels and immidiately wipe it off. It will strip every bit of brake dust and leave your wheels very shiny. I would only spray it on cool wheels and I advise against leaving it on for a prolonged period of time. Awesome did a great job on removing the caked on blow by underneath the hood of my F350 diesel, took all the sludge right off. It will definately discolor plastic so be careful. Bottle states that it is non toxic and I have never used gloves, pretty safe I guess.

Good Luck!!