Thats just the way it is. Its a high performance vehicle and the dust has to go somewhere. All you can do is keep up with them. Avoid using chemicals and waxes to try and prevent it. The chemicals in a way end up being magnets for the dust. Use nothing but soap and water to clean the wheels.
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Current: 2019 F90 M5 Competition
Previous: 2016 F80 M3
Past: 2013 E92 M3
Past: 2011 E92 335Xi
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