Meguiars Ultimate Wheel Cleaner, Acid Free and PH Balanced, 24 oz.

It cleans the wheels. All of them. It's an all wheel cleaner. If you have a wheel, and you put it on there, it will certainly clean it, I tell you what. Kudos, Maguire's, your product lives up to its name. On a more serious note, this works incredibly well as a prep spray on the wheels and tires if you let it sit for a few minutes and then apply a foaming tire cleaner on top of it. It will take care of the decontamination and iron removal, as well as a good amount of the actual cleaning process, and get everything loosened up enough to where a polymer or surfactant-based product (along with agitation using a wheel brush) will be able to take it to a very nice, clean shine. Unless your wheels are absolutely filthy and have never been cleaned before, it will most likely get the whole process done in one fell swoop. If they are that dirty, it will still only take two times through the regimen, which is much better than I can say for most products and techniques. A+ stuff: it performs just as well or better than many products at a much higher price point.

Used this on my M4 666 rims and the result is disturbing. My rotors were solidly rusted over when used as directed. No dust removed from rims after 3 minutes and pressure wash rinse. The worst of it is that my dark coating on the rims is permanently pitted where the product sat and ate into it. The areas where the rotors are not rubbed by the brake pads will now be rusting forever. No idea how to correct at this point. Driving through saltwater would likely provide the same result. Buyer beware.