08-16-2017, 07:46 AM | #1 |
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F31 Wind noise
Hi all,
I have weird wind noise that seems to come from the driver side when I drive at 140km/h and more. I have posted a video of the noise that shows that under 140km/h no noise at all... It seems to come from under the car... and I am pretty sure that the noise is new... I thought it was coming because there was wind... but yesterday when I shot the video, no much wind outside.. How can I isolate the source of the noise ? any idea ? Please do not say that wind noise comes with illegal speed as 140 here in France is common when overtaking Kind regards Steve |
08-16-2017, 08:45 AM | #3 |
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Maybe this sound is not wind noise but transmission issue. I would suggest to send video to BMW dealer and they will help you out. This is not normal noise whatsoever.
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08-16-2017, 09:11 AM | #4 |
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That sounds horrible. It might be a floor panel vibrating, or even a transmission issue. Who knows. Get it on a loft and inspect everything.
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08-16-2017, 09:52 AM | #5 |
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Not sure what that is, but it's likely not wind noise. Get thee to your dealership.
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08-26-2017, 05:12 AM | #6 |
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Hi, thanks a lot for your messages.
It is definitely a wind noise because it simply disappears when there is another car in front of me. The noise is coming when I have the road widely open ... does it mean that I should only stay behind I looked under the car and could not find anything apart from a center plastic part which is a slightly curved. Could that be the source of the issue ? Thanks again for your support. Steve |
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10-12-2017, 12:18 PM | #7 | |
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Have you found the source of the problem? I have just bought a 2012 BMW f31 328i sport line and noticed the exact same noise. It starts at around 150km/h. and stops below that speed. Do you have any progress in the troubleshooting? Thanks!! |
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10-12-2017, 01:48 PM | #8 |
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Here is a video of my noise problem, I think it is exactly the same...
https://www.youtube.com/channel/UCvG...AjHGgSXDPa_L0Q |
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10-13-2017, 09:11 PM | #9 |
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I bet it is a loose piece of the splash guard under the car that starts vibrating when the airspeed under the car is fast enough. Helps explain why it stops when following a car for instance
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10-23-2017, 02:15 AM | #10 |
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Next weekend I will try to get the car on an elevator and inspect everything to see if I can find the source of the noise.
On the meantime, if anyone with the same problem has any useful information, I will be appreciated. Thanks! |
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10-29-2017, 01:13 PM | #11 |
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SOLVED!!!!!!!!
HI! This morning I went under the car and solved the problem!!! The source of the problem could be 2 different things: After removing the cover under the car, I noticed there was some cables that seemed like it should be hidden behind a bar, but they had slipped under the bar: It looked that they could flap under high wind, so I tied them up behind the bar: Also, when screwing the cover back again, I noticed that one of the screws were harder to get right. It was in the front-left part of the cover, and it had to clamp 3 layers together (the front bumper, the cover and some rubber). Here is a photo without the cover, where I am holding that rubber layer: It took me some time, but I went sure that the 3 pieces were screwed together right (the rubber layer was hard to get right). After tightening again all the cover, I did a test run and THE F****G NOISE WAS GONE! So, I´m not sure which of them was the cause, but you should be able to fix it in a few minutes. I hope this helps other people with the same issue. |
10-30-2017, 07:39 AM | #12 | |
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07-14-2018, 11:53 AM | #13 |
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Hi All, I notice the same problem and noise is from 120 and simetimes from 140. Also when I am behing big track and cars noise disappears. I even put small camera in the engine but could not catch enything. I will tray to solve this cable/ noise issue next week and if this ok will write you again.
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09-04-2018, 02:46 AM | #18 |
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Hi again,
The noise has appeared again like 3 months ago.... (without touching anything under the car...) I have checked all the screws of the cover under the car, removed it and put it back again... I have even tried removing the cover and the noise continues... Now I am not sure that the noise is coming from the cover, and I am not sure about the solution I claimed to be valid... I will continue to try to find the problem. As this seems to be an issue for more people, please share if you find anything. |
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12-09-2018, 09:46 PM | #19 | |
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Yes i have this same noise. Mine happens when i accelerate at certain speeds, 60km/hr and 100-120km/hr. Any advice? Ive check my rear axle and went for servicing. Tyres were changed. It couldnt be wind noise. Probably rear brake rotors are warped? |
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03-24-2019, 05:47 PM | #20 | |
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Edit: The sound and vibration starts at around 120km/h and varies with wind gusts. I have had the problem before - last 2 years ago. My mechanic thought the problem was a hole in the panel from bottoming out the car. The panel was replaced and the sound dissapeared until today. Had a look below the car and the panel is fine - all the screws are present etc. Last edited by shindigs; 03-24-2019 at 06:01 PM.. |
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04-02-2019, 05:34 AM | #21 |
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Finally Found A Solution
Hi! after lots of research I found a solution:
in the zone marked with number 2, the cover was flapping a hitting some wiring support. You can see the marks in this photo: I put some foam padding between the wiring support and the cover, and the noise dissapeared!!! I hope this helps someone!! EDIT: Just to clarify, I have been driving 4 months since I padded this, and the noise has not appeared again. Last edited by Lance Murdock; 04-02-2019 at 05:43 AM.. |
04-02-2019, 11:22 AM | #22 |
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