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Old 10-11-2013, 08:30 AM   #18
DBESTGTI
Formula 3000 Champion
 
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Drives: 2011 Stage 2 GTI
Join Date: May 2011
Location: Colorado Front Range
Posts: 4,171
The aerodynamics of every hatchback causes a large low pressure area behind the car which is always going to pull in dust and dirt to the back of the car. The mud flaps just stop the car from spitting road debris and rocks (especially on some of the dirt and/or gravel roads to get to trails heads) down the side of the car and at the bikes on back.
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