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      11-04-2011, 12:56 PM   #21
DesiRoc
Kumar
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Drives: '09 328i AWD E90
Join Date: Aug 2011
Location: Wisconsin

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Chill guys, this is a normal and really common problem. Just a design flaw. The driver side mirror hits the wind in such a way that it makes this annoying whistling sound. I posted about it as well.

If you put your hand over the mirror cover you won't hear the noise.

A simple remedy is to take some electrical tape and cover the little slit on the mirror cover, which is where the problem initially arises. However, it'll look sorta rice, lol.