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      10-31-2013, 10:38 AM   #17
JSY
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Drives: 2024 BMW X3 M40i
Join Date: Nov 2011
Location: New York

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I've noticed that if I have windows open, the thud with the tailgate is a lot louder - like a slam. When I have all windows closed, it is not has loud. I think this is due to the air pressure and the less resistance it has closing when windows are open. It's like when someone closes a door. If you have windows or another door open, the door closes more freely resulting in a slam. Anyway, that's my theory. lol
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