[Marco-BMW]

Hello,

I have an annoying problem that is hard to diagnose for the dealer. It's a sound from the wind (I think) that starts at around 120km/h. I made a video where you can hear the sound, but it is louder in the car (the recording is not so great). You really need to listen behind the sound of the wheels and put the speakers loud It goes away at 0:16 because I slow down, at 0:20 it comes back when I accelerate.

https://www.youtube.com/watch?v=yxoOiO-LcTc&feature=youtu.be

Does anyone recognize this sound, and maybe help me to point out where the problem is?

I've already diagnozed the following with my own experiences;
- it's louder during the day (probably temperature)
- it's louder when the wind is strong and it less hard when driving behind a truck
- you can hear it between 120km/h and higher (but doesn't really sounds louder)
- it's not the rim, wheel bearing or tyres
- it's mostly hearable in the driver's seat and less as a passanger
- and it seems to be coming from the middle or top left of the car

The person who can point out where the problem might be I will thank 1000 times, because no dealer was able to figure it out so far..._a_

 

[Marco-BMW]

So nobody knows this sound ?

 

[hashimyassin]

I have the same problem on my 125i but don't know where it comes from. Let me know if you were able to find out

Sent from my iPhone using Bimmerfest mobile app

 

[Real_deal07]

Sound

So nobody knows this sound ?

It's the air flowing over the side mirrors

 

[Marco-BMW]

I don't thik so because I've not had this problem during the first two years. I've also taped the mirrors and the problem still occured. Now it doesn't happen because the temperature is too cold. So it only happens in warm temperatures