Koch ChemieMagic Wheel Cleaner - Powerful Rim and Rim Well Cleaner; Acid Free, Dissolves Iron Particles Using Visible Red Discoloration, Excellent Adhesion and Viscosity (5 Liters)

I have tested on dry wheels, with zero agitation, and they have come out very clean. The second pass with foam cannon and minor contact will yield perfect wheels.

I have a BMW with M Sport Brakes. The break dust is difficult to remove, I have ceramic coated black wheels and wash the car ~2 weeks, don't drive alot of miles. I had been using a ph neutral foaming cleaner on the entire wheel/tire, then using a PH 10 (can't go higher with the coating) APC on the wheel and then an iron remover. All of these together did not clean nearly as well, often leaving brake dust behind, never mind the hard to reach places.Now I just use MWC, give a proper cleaning and always have perfectly clean wheel, with a PH of 5.5, much better for my ceramic coating. This stuff is $$, if you don't have ceramic coated wheels and can use the PH 12-13 cleaners or don't have BMW brakes. I would use the much cheaper and effective wheel cleaners out there.

It does what is supposed to do!