Fluterring noise delete?
Leaking car in heavy rain/carwash delete?
Clanking noise from front windows delete?
Take a look at the youtube video in this thread:
http://www.e90post.com/forums/showthread.php?t=175589
OP - you should look at the e93 threads before you make your decision.
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2006 A6 3.2 Quattro
2008 e93 335i, 6sp MT, Montego Blue, Saddle, Burl, ZSP, Bluetooth, iDrive, PDC, V1+CD
2007 e92 335i coupe, 6sp MT, Montego, Beige, ZPP, iDrive, PDC
2006 e90 325i, ZPP, iDrive, Arctic, Xenon