High pitched noise when windows are down?

aerostar · 07-11-2018, 06:44 AM

Anyone have this in their car?

When I drive w/ my windows down I get this random high pitched squeak.

I don't know if it's air entering the cabin or if it's something in the back moving around...

Alvinized52 · 07-11-2018, 11:53 PM

I heard the emblems on the seats make high pitched sounds. Did u look into that?

Its either that or the poltergeist thats sitting in your back seat trying to get your attention.

Poiseuille · 07-12-2018, 05:23 AM

more info
You say 'random' squeak. Is it really random or is it repetitious at some frequency? Does the frequency change? If it does, is the change related to ground speed or engine speed? In the meantime tap the dust shield behind a rear rotor with a thin screwdriver or similar, see if the sound seems familiar.

FatRear08 · 07-12-2018, 05:47 AM

Quote:

Originally Posted by Poiseuille

more info
You say 'random' squeak. Is it really random or is it repetitious at some frequency? Does the frequency change? If it does, is the change related to ground speed or engine speed? In the meantime tap the dust shield behind a rear rotor with a thin screwdriver or similar, see if the sound seems familiar.

+1 Dust Shields

stormlv · 07-12-2018, 05:59 AM

Quote:

Originally Posted by aerostar

Anyone have this in their car?

When I drive w/ my windows down I get this random high pitched squeak.

I don't know if it's air entering the cabin or if it's something in the back moving around...

Does it depend on your speed?

For me, I noticed some high pitched noise with the window down just after I switched the mirror caps to the carbon fiber ones.

It seems that the noise in my case is coming from the right tip of the mirror (where the cut out is). If I put my hand there or if I squeeze the whole assembly together, the noise seems to fade.

If it's really random, then it's definitely not what I have

M4_CaptFlashheart · 07-13-2018, 06:33 AM

yes the noise on my M4 is from the drivers side mirror when the window is down. blocking the small air channel between window and mirror stops the noise. they made it aerodynamic without making it aerodynamic.

Beemerm3 · 08-10-2019, 06:30 PM

How do you fix that anyways? I got carbon fiber mirror caps and it's making this high pitch noise.

07-11-2018, 06:44 AM	#1
aerostar Major 746 Rep 1,247 Posts Drives: 2018 F80 Join Date: Apr 2015 Location: NJ iTrader: (0)	High pitched noise when windows are down? Anyone have this in their car? When I drive w/ my windows down I get this random high pitched squeak. I don't know if it's air entering the cabin or if it's something in the back moving around...
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07-11-2018, 11:53 PM	#2
Alvinized52 @ste4lthedF82 881 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	I heard the emblems on the seats make high pitched sounds. Did u look into that? Its either that or the poltergeist thats sitting in your back seat trying to get your attention.
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07-12-2018, 05:23 AM	#3
Poiseuille Brigadier General 5387 Rep 3,737 Posts Drives: 2016 M4 DCT Tanzanite/Amaro Join Date: Oct 2016 Location: Princeton iTrader: (0) Garage List [0.00] [10.00]	more info You say 'random' squeak. Is it really random or is it repetitious at some frequency? Does the frequency change? If it does, is the change related to ground speed or engine speed? In the meantime tap the dust shield behind a rear rotor with a thin screwdriver or similar, see if the sound seems familiar.
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07-13-2018, 06:33 AM	#6
M4_CaptFlashheart Second Lieutenant 227 Rep 268 Posts Drives: M4 2018 Join Date: Aug 2017 Location: uk iTrader: (0)	yes the noise on my M4 is from the drivers side mirror when the window is down. blocking the small air channel between window and mirror stops the noise. they made it aerodynamic without making it aerodynamic. __________________ M4 AY 2016 M4 SMB 2017 M4 Riviera Blue with CCB's 2018
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08-10-2019, 06:30 PM	#7
Beemerm3 First Lieutenant 59 Rep 345 Posts Drives: 16' BMW m3 Join Date: Jul 2019 Location: Sacramento iTrader: (0)	How do you fix that anyways? I got carbon fiber mirror caps and it's making this high pitch noise.
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