After I tested many different wheel cleaner, this cleaner is for me the number one when it comes to get stubborn dirt from the wheels. And all also acid free! Application: 1. All 4 wheels spray, best to start with the front, because here the most brake dust sits. . 2 Leave for 2-5 minutes. Where the dirt "added" is, the cleaner purple colors. . 3 cumshot the rim with a sharp jet of high pressure cleaners. . 4 in order to achieve optimal results, you should also go with a sponge, warm water and a little detergent to the rim and this wash again thoroughly to achieve a perfect shine.
The pictures show some of my rims that I treat all with the cleaner.