OK so this product obviously exists in response to the Armor All Wheel Protectant product that has become popular, especially with people who own German cars, as we all know they are notorious for spitting out hellacious amounts of brake dust. I have been using the Armor all product with good results for about a year and I have been satisfied with it. I was anxious to try the Meg BDB, as I actually wrote into the section on MOL suggesting new products, and it came true. For a minute I felt like Cinderella, but that's another thread.... OK, so after 200 miles of mostly city driving here's what I have so far: (Driver side is using Armor All Wheel Protectant and Passenger Side is using Megs Brake Dust Barrier) 2011 BMW 535i Sport Armorall front: Megs Front: Armorall rear: Megs Rear: Both rims started out spotless, barrels were scrubbed. OPC 3:1. Then dried using Metrovac 8 hp. I was careful to evenly spread both products and waited 8 hours before I drove the car. So far, Megs is kicking the armor all's hind end. I am liking the results of the Megs BDB better. It was easier to apply and took less product to cover the wheel.