I tried Armor All Wheel Protectant/Dust Repellent based on some reviews but it did not work on my M5 wheels although I strictly followed the instructions. I also tried the BDR Brake Dust Repellent which also failed to repel brake dust -- maybe, I was trying too much to look for a "non-existent" product which completely repels brake dust. What I found out though, is that the BDR product, unlike the Armor All, made dusting off the brake dust much easier with just the use of a hand brush. I am still looking for that great Brake Dust Repellent but will continue to use the BDR product as I ordered several bottles.
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