Thread: F36 (440i, 2017) Faint Whistle / Whine at speed 30 MPH
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      06-13-2020, 08:49 AM   #2
tardboi
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Drives: 335i xDrive MSport
Join Date: Aug 2019
Location: Wisconsin

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The mirror caps are known to howl around 25-40 mph and there is a bulletin to fix this. Could that be it?
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