I used the mothers wheel wax on my previous car. It did help with cleaning and reduced buildup. But I'm betting a coat of Z2 &Z6 would do the same.

 

I put Rejex on the wheels and clean them with Hot Rims wheel cleaner. Seems to be a pretty good combo.

 

To fix the brake dust problem is get a set of ceramic pads they are more money but you don't have the problem of dust. I bought some ray bestos for my wifes cirrus and they don't dust at all and thats great for chrome rims no black chrome!

 

The last time I rotated my tires, I put 2 coats of Klasse AIO on. Brake dust wipes right off. It's a lot easier to work on the wheels when they're off the car.