This product does clean your wheels quite well. My wheels weren't ridiculously contaminated, but it did dissolve the caked on brake dust and materials in the barrel of the wheel and behind the spokes. It make it quite easy to clean and it was very satisfying watch the wheels bleed purple. Best to use this with a selection of stiff brushes to scrub off all the material. My only issue if that I used quite a lot of the bottle to clean 4 wheels and it's not a very economical choice, especially for the casual car cleaner who has reasonably clean wheels, however that could be be that I'm quite heavy handed. If you are serious about decontaminating the dirt on you wheels, and you haven't properly cleaned your wheels in a long time, no product will do the job better.