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      11-23-2012, 01:47 AM   #5
Drives: F30 Luxury 18D 143 BHP 320NM
Join Date: Jun 2012
Location: Europe

Posts: 96
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This is normal; indeed for aerodynamic and comfort reasons (limiting wind noise). You have to push twice to open it for 100% but then it is recommendable to open one window slightly in order to prevent cabine turbulence
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