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Brake Duct flap removal
Read all the threads/discussion on the flaps riveted to the outlet of the brake ducts. Is there a consensus on what they are there for? Aerodynamics or just blocking flow??
I had the front bumper and front wheels off, thought about it for a while, read some more, thought about some more, then ripped them off. They seem like they were either added after the fact (i.e. some BMW engineer uncovered something in testing and it was too costly to retool) or they were designed to be removed for some reason. I drove the car around the neighborhood without the bumper on, flaps removed...I noticed that as the tire rotated, dirt/sand was being thrown into the ducts. Perhap said BMW engineer discovered the opening was too wide and was allowing water, dirt, rocks to be thrown forward.
Anyhow, too late, they are gone now. Just curious if anyone discovered the real purpose.
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