Wind Noise from Sunroof

Shoushi Malouche · 12-03-2006, 08:36 AM

Noticed today that I was getting a fair amount of wind noise around the front seal of the sunroof, especially when the sun shade is open. Does anyone else notice this?

I have had a few cars in the past that the alignment has been off, or maybe this is normal.

Thanks

Jb

SoYank · 12-03-2006, 09:43 AM

I presume from how you wrote your message that the sunroof is closed and not open. Are you sure it is completely closed? If it happens when the sunroof is open then it is probably normal. The plastic sawtooth flapper is supposed to reduce this.

RiXst3r · 12-03-2006, 09:48 AM

My x3 had a seal that would come up in the wind... check the rubber seal to make sure it doesnt come up at all around the glass, it should be totally flat with the cars roofline.

Mr. Smith · 12-03-2006, 10:01 AM

the seal may be damaged or messed up or something, check

Asiann · 12-03-2006, 12:22 PM

Check to see if the sunroof is closed properly first then take a look at the seal and see if there are any cracks or holes that would make the noise. You shouldn't hear any noise with it closed.

pseto · 12-03-2006, 09:22 PM

Quote:

Originally Posted by SoYank

I presume from how you wrote your message that the sunroof is closed and not open. Are you sure it is completely closed? If it happens when the sunroof is open then it is probably normal. The plastic sawtooth flapper is supposed to reduce this.

Anyone think the sawtooth flapper (or whatever its called) actually causes more noise?

espo · 12-03-2006, 09:50 PM

Quote:

Originally Posted by pseto

Anyone think the sawtooth flapper (or whatever its called) actually causes more noise?

No... The physics behind it were explained here in depth before (do a search and you will find it). Essentially it has to do with fluid dynamics and the boundry layer created around the car.

Do a test on the highway.. Open the sunroof alittle so that the sawtooth wind breaker doesn't come up yet, then open it all the way. You will notice the different. Also, if I'm not mistaken, the flapper (as you call it) is only spring loaded and you should be able to pull it down with your hand when the roof is open (I could be wrong, and it might just get locked in the up position when the roof is fully open). Try the same test then...

bronco · 12-03-2006, 10:28 PM

Buy Acura to get quiet sunroof...

Asiann · 12-03-2006, 11:38 PM

Quote:

Originally Posted by espo

No... The physics behind it were explained here in depth before (do a search and you will find it). Essentially it has to do with fluid dynamics and the boundry layer created around the car.

Do a test on the highway.. Open the sunroof alittle so that the sawtooth wind breaker doesn't come up yet, then open it all the way. You will notice the different. Also, if I'm not mistaken, the flapper (as you call it) is only spring loaded and you should be able to pull it down with your hand when the roof is open (I could be wrong, and it might just get locked in the up position when the roof is fully open). Try the same test then...

I can't remember the reason either but there is one! I think your explanation is in the ball park atleast. Ever wonder why no one has the sunroof deflector.

Lost Rider · 12-04-2006, 03:03 AM

Me too!
Recently I have noticed the same thing, noise close to the front of it with the shade open.
I'm sure I would have noticed before if it was this loud.
Maybe the seal has deteriorated.
I'm going to take mine in soon to deal with this problem and the flat spot/hesitation around 3800 rpm's.

I don't have a sawtooth flapper, mine has a thingy with a net on it..........goes up about 3 inches above the car, and yes it causes more sound, and with out my rear windows cracked my sunroof causes crazy wind-bass in my car, but that has been covered here many times........

fueledbymetal · 12-04-2006, 06:32 AM

Get your car checked out att the dealer. I almost always have my sunshade open but I've never heard any excess noise from that area.

SoYank · 12-04-2006, 11:42 AM

Quote:

Originally Posted by Asiann

I can't remember the reason either but there is one! I think your explanation is in the ball park atleast. Ever wonder why no one has the sunroof deflector.

Aesthetics. Those things are damned ugly.

citkane · 12-04-2006, 01:01 PM

Quote:

Originally Posted by Shoushi Malouche

Noticed today that I was getting a fair amount of wind noise around the front seal of the sunroof, especially when the sun shade is open. Does anyone else notice this?

My old E60 had this noise when the shade was open, even at low speeds of less than 100km/h. The dealership was unable to fix it, they tried to adjust the sunroof several times. In your case, you should not hear anything from the sunroof, even with the shade open at cruising speeds.
Don´t know what made me get this stupid sunroof again in the E92 since I never use it anyway. It is quiet at normal speeds (up to around 200/220km/h) although at speeds beyond, it does generate some heavy noise. At vmax (250km/h) it sounds as if the sunroof is about to disintegrate, even with the shade closed. Also the side windows do get a "little" noisy as well. As long as the wheels don´t come off I couldn´t care less

12-03-2006, 08:36 AM	#1
Shoushi Malouche Second Lieutenant 26 Rep 241 Posts Drives: BMW 335i Join Date: Oct 2006 Location: Canada iTrader: (0)	Wind Noise from Sunroof Noticed today that I was getting a fair amount of wind noise around the front seal of the sunroof, especially when the sun shade is open. Does anyone else notice this? I have had a few cars in the past that the alignment has been off, or maybe this is normal. Thanks Jb
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12-03-2006, 09:43 AM	#2
SoYank Major General 571 Rep 7,519 Posts Drives: 2009 E90 335i MT Join Date: Mar 2006 Location: Vinton, Virginia iTrader: (1) Garage List 2009 BMW E90 335i S ... [9.00]	I presume from how you wrote your message that the sunroof is closed and not open. Are you sure it is completely closed? If it happens when the sunroof is open then it is probably normal. The plastic sawtooth flapper is supposed to reduce this. __________________ **2009 E90 335i Montego Blue · Black Leather · Burl Walnut · 6MT · US Spec** SatNav • ZPP • ZCW • 6FL • TPMS • iDrive • PDC • HWS • Xenons • BMW Assist • Power Rear Sunshade • Logic 7 European Taillights • Rear Foglamp • OEM Alarm • PicoTray • DataToys XM-DVR • Multi-view Processor Quaife ATB LSD • Short Shift Knob • Hartge Anti-Roll Bars • AP Racing Front Brakes • 19" Style 269
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12-03-2006, 09:48 AM	#3
RiXst3r 274 Rep 6,510 Posts Drives: M235i Join Date: Sep 2006 Location: Ohio iTrader: (14)	My x3 had a seal that would come up in the wind... check the rubber seal to make sure it doesnt come up at all around the glass, it should be totally flat with the cars roofline.
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12-03-2006, 10:01 AM	#4
Mr. Smith Second Lieutenant 2 Rep 229 Posts Drives: 2007 328i Sedan (Ordered) Join Date: Nov 2006 Location: Charlotte, NC iTrader: (0)	the seal may be damaged or messed up or something, check __________________ Ordered: 2007 328i Sedan/ Montego Blue/ Beige interior with wood trim/ STEPTRONIC/ Sport package/ Premium Package/ Cold Weather Package/ Comfort Access Comes in January
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12-03-2006, 12:22 PM	#5
Asiann Got Seoul? 116 Rep 2,862 Posts Drives: 2012 535i MSport Join Date: Dec 2005 Location: Honolulu iTrader: (0) Garage List 2012 BMW 535i [0.00] 2008 750Li [0.00] 2006 BMW [0.00]	Check to see if the sunroof is closed properly first then take a look at the seal and see if there are any cracks or holes that would make the noise. You shouldn't hear any noise with it closed. __________________ Can you say Alooooha? [SIGPIC][/SIGPIC]
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12-03-2006, 10:28 PM	#8
bronco Colonel 76 Rep 2,104 Posts Drives: e92 Join Date: Nov 2006 Location: Atlanta iTrader: (0)	Buy Acura to get quiet sunroof... __________________ SaaS - The world of tomorrow is already here...www.saaschronicles.com
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12-04-2006, 03:03 AM	#10
Lost Rider Captain 87 Rep 805 Posts Drives: R NineT, X1 Join Date: Dec 2005 Location: Ventura County, CA iTrader: (0) Garage List 2014 BMW R NineT [0.00] 2015 X1 xdrive [9.00]	Me too! Recently I have noticed the same thing, noise close to the front of it with the shade open. I'm sure I would have noticed before if it was this loud. Maybe the seal has deteriorated. I'm going to take mine in soon to deal with this problem and the flat spot/hesitation around 3800 rpm's. I don't have a sawtooth flapper, mine has a thingy with a net on it..........goes up about 3 inches above the car, and yes it causes more sound, and with out my rear windows cracked my sunroof causes crazy wind-bass in my car, but that has been covered here many times........ __________________ GET LOST! www.lostrider.com
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12-04-2006, 06:32 AM	#11
fueledbymetal Lieutenant 129 Rep 579 Posts Drives: 2024 G80 6spd, Cayman GTS 4.0 Join Date: May 2006 Location: Lexington Park, MD iTrader: (0)	Get your car checked out att the dealer. I almost always have my sunshade open but I've never heard any excess noise from that area. __________________ Instagram: te37sl_m3
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