How long does brake dust have to sit on the rim before it does any damage?
Does brake dust buildup affect the stopping power or the rotors of the car?

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2006 BMW 650i Convertible | Black Saphire Metallic/Creme Beige leather | Light Birch Wood | 6 speed Steptronic Automatic | Sports package
Cold Weather | Logic 7 Sound | Active Steering | Sat Radio | 50% Carbon Tint |

2007 BMW 335i Convertible | Black Saphire Metallic/Cream Beige leather | Light Poplar Wood | 6 speed Steptronic Automatic | Fully Loaded | 35% Huber Optik Ceramic Tint |