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05-22-2016, 07:05 PM | #1 |
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2008 BMW e90 Unknown noise w/ video please help
All,
Can you help me identify this noise? It sounds like it could be a rear differential issue from what I have read. It is a whirring/whistling type noise that only seems to occur at 50/60 mph in 4-5-6th gear. It sounds like it is originating from the rear passenger side. 2008 m3 e90 6MT. Please help! Thanks Last edited by griz31; 05-22-2016 at 07:20 PM.. |
05-22-2016, 08:17 PM | #3 |
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05-24-2016, 10:55 AM | #4 |
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I have a diff whirring noise at 3K rpm under partial/light load, typical for cruising, which sounds similar, best as I can tell.. noise has been there for 3 years without change.
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05-24-2016, 11:29 AM | #5 |
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I can hear it clearly , it's a whine noise and it makes me think on the whine noise of the Harrop SC .
But I have no idea of what it could be
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05-25-2016, 12:38 PM | #6 |
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Thanks all. The noise was hard to capture in the video (cell phone) and sounds much more invasive in person. After researching rear differential whirring noises - I found some better quality videos that seemed to be the exact noise I am experiencing. Car is currently at the shop for a look - Ill post updates when I get them.
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05-25-2016, 01:42 PM | #8 |
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05-25-2016, 03:15 PM | #9 |
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05-28-2016, 10:17 AM | #11 |
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Update
Got the car back and they said it was "normal". It makes a sognificantly different sound from 60-80 mph which just can not be normal. They are bringing it to a BMW service center for a second opinion. If this is deemed "normal" im not sure I can deal with it and may look into an S4 |
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05-28-2016, 10:36 AM | #12 | |
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Quote:
Such a noise would drive me crazy , and I really hope the BMW service center for a second opinion can find the cause of the noise . Please keep us posted , and thanks for the update .
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06-01-2016, 12:16 AM | #13 |
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I never ended up making it to the next service appointment. I just felt there was too much wrong with the car for a "new" purchase. I realized I was trying to force myself into an m3, and this just wasn't the right one.
Ended up getting myself into a 235i and the thing is incredible |
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06-01-2016, 09:49 AM | #14 |
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Probably regular diff or transmission noise. Its pretty standard on this car. List to the whine of a straight cut transmission in a race car and this will sound like nothing.
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06-01-2016, 09:56 AM | #15 |
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I had a hard time thinking it was normal since the noise would change with throttle response in the 60-80mph range. Even if it was normal, I figure I couldn't tolerate that over the long term. Thanks for the input!
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