Terrible Sound at 100 MPH
07-16-2012, 06:24 PM
#21
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Location: Indiana, USA
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My Ride: 2007 530xi: Sport, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, HD Radio, SAT, Custom NCS coded options 2008 535xi: Sport, Night Vision, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, SAT, Custom NCS coded options, Rear Seat Heat Retrofit, Passport 9500ci
Model Year: 2008
Engine: N54
Don't meed a lift or mechanic to put some tape on the windshield.
07-18-2012, 08:18 AM
#23
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My Ride: 2009 M3
Mine was making a very similar sound at +80mph and I tracked it down to the air filter (for cabin air on the engine) on the driver side was not locked down. After re-securing it I've never hear the sound again. For the longest time I was convinced it was a windshield leak or something with the nose or brake ducts. Check that both filters are secured.
07-18-2012, 09:51 AM
#24
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My Ride: 2008 535i LCI with sports/premium package, Sports trans with paddle shifters, CF emblems, JB4 Software, Dinan Exhaust, Navigation, M5Tech body kit, Carbon wrap interrior trim and CIC Controller.
Mine was making a very similar sound at +80mph and I tracked it down to the air filter (for cabin air on the engine) on the driver side was not locked down. After re-securing it I've never hear the sound again. For the longest time I was convinced it was a windshield leak or something with the nose or brake ducts. Check that both filters are secured.
08-04-2012, 07:06 AM
#25
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My Ride: A4
Model Year: 2017
Bought some tape weeks ago, but only placed some on the moon roof seals this past Thursday. On a 31 to 32-degree day, I did not get any noise while driving around 90 MPH (solely for testing purposes). I have had this noise appear as low as 80 MPH on hot days around the same temperature, but I don't know if the absence of sound was coincidental or I found the source on the first attempt. I plan on leaving the tape attached for several more days on this area to do more testing, but there will be some time before this occurs due to my rocking a pretty terrible cold. Where the weather seal comes back to meet itself, how big should that gap be? There is at least a 2-mm gap at that point, maybe 3 mm.
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