I was always in favor of brake dust shields, but never purchased a set. So I just methodically wipe down the wheels on all of the vehicles at night. Takes about 30 minutes, or usually less, since only one car is ever out at any time...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car