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      04-18-2013, 06:27 PM   #6
drob23
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Quote:
Originally Posted by Rolux Magnum View Post
Yes its pretty bad, the F30 is the worst I have seen this effect. Normally I drive with one rear window down for the dog.
On my Lexus (RX350) there is no such effect - the only thing you notice is that the radio gets a bit louder.
What I have noticed is that if you open both back windows this helps. Opening the sunroof also reduces it a bit, or a front window (drivers) seems to stop it.
Obviously it's because of BMW QC problems

/sarcasm

Probably just different window geometry...the design folks likely overrode something a pimple faced engineer suggested after wind tunnel testing.
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