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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 01-26-2013, 06:06 AM
andyz0 andyz0 is offline
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Mein Auto: 2007 BMW 320D e90 M-Sport
Two noise problems - flywheel and o/s front wheel

Hi.
I recently bought my first e90 320D m-sport with 96k on the clock. Love the car but had a few issues with it already, including a broken central locking solenoid, and moisture getting into the remote locking sensor.
However it now has two issues which are doing my head in.
1) When the clutch is half depressed, it becames rattly and noisy. I understand that it is the flywheel, and I also understand this could be costly. It is under TheAutoGroup warrantly who have so far replaced the solenoid no problem. I am aware that the flywheel hasn't actually failed yet, but surely if a flywheel totally fails that's pretty catestrophic? Right? Could I argue that it needs replacing as it's getting pretty noisy and is imminent? I don't want to get done for warranty fraud but I also don't want the clutch to be destroyed when it fails at some point! I have over 6 months left on my warranty but it could fail tomorrow, or in a year or two, I don't know. It sounds just like this youtube video I found (this isn't my car but sounds just like it so didn't bother recording a new one):

Anyone else had this problem and lived with it for years, or had it fixed under warranty? I didn't notice the noise when I got the car.

2) My other problem is more annoying than anything. At speeds of 40mph+ and noisier it gets as the faster it goes (not rev related, just speed related), so at 70mph it is noticable (but never very noisy). There is a dull on and off low frequency vibration sound, that gets quieter and noisier every couple of seconds, quite regular. It's not very loud but it's there, when cruising at 70 or so on the motorway, on all road surfaces (drowned out by concrete roads more!). I have had it diagnosed at a BMW specialist but they said although they could hear it they couldn't find anything wrong with the suspension. I have had the following looked at and all is fine apparently:
- Shocks & coils
- Bushes
- Tracking (front and rear)
- Bearings
- Wheels re balanced although that whel had to have a lot of weight put on one side (could it be out of shape to cause that noise?)
- Replaced rear tyre that had a slow puncture and ran on flat for ?? miles (!)
- Braces are tight
- Replaced all my discs (noise was there before and after)

I did notice when changing discs that the dust plate was a little bent out of shape and I think I got in a stone it in at some point as there was a horrible screeching and scraping rotational sound which had suddently stopped. Could it be this (bent out of shape, not badly, causing vibration at speed due to the airflow over it)?
Also, there is no vibration through the steering wheel - it is just a sound.
The tyre is a nearly new Dunlop - maybe it's just noisy, but surely not that noisy!

Last thing is just a question - if I am using run flats (apparently I am) how do I reset the sensors as it ran on flat and didn't alarm!

Thanks for your help in advance!
Andy_a_
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  #2  
Old 01-29-2013, 02:31 PM
andyz0 andyz0 is offline
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Bump! Nobody got any ideas? Thanks
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  #3  
Old 01-29-2013, 03:20 PM
mr_bean mr_bean is offline
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1. DMFs are notoriously noisy. Some more than others. The sound may be completely benign but maybe it's worth trying to get it fixed under warranty to put your mind at ease. If that doesn't work then just live with it. IMHO, the chances of it failing catastrophically are pretty close to nil. If it makes you feel better, my Mini has been doing it for the past 60,000+ miles with no issues.

2. It's the tires. This is better known as a "two frequency beat" to the physics nerds. Make sure all four tires have the same amount of tread and the specified pressure. If it still persists, then wait until you need four new ones and the problem should go away.
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  #4  
Old 01-29-2013, 03:27 PM
andyz0 andyz0 is offline
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Thanks mr bean that has put my mind at rest. I figured I will live with it until it fails under warranty (7 months left). My Front two tyres do not match. One Michelin and one Dunlop, both quite similar tread but obviously different pattern and characgeristcs. I didn't choose to put mis matching ones on. Got matching Bridgestone on the rear. I will swap it for a matching one as its a bit annoying! Can always keep the other tyre and match that one later.
Thanks again!
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  #5  
Old 01-29-2013, 03:40 PM
Ilovemycar Ilovemycar is offline
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Quote:
Originally Posted by andyz0 View Post
Thanks mr bean that has put my mind at rest. I figured I will live with it until it fails under warranty (7 months left). My Front two tyres do not match. One Michelin and one Dunlop, both quite similar tread but obviously different pattern and characgeristcs. I didn't choose to put mis matching ones on. Got matching Bridgestone on the rear. I will swap it for a matching one as its a bit annoying! Can always keep the other tyre and match that one later.
Thanks again!
Good idea. Pretty much everyone here would agree that it's a good move. Some are less concerned about mismatching fronts to rears, but as for side to side . . .

You can measure the depth with a cheap gauge for it, and I know if you order thru Tire Rack, they have a service where they will shave down the tire for you to your specification. I want to say it only costs something like $5 but am not sure.

For resetting TPMS, just use google and/or youtube, you will find the instructions you need immediately. Even with video if you want. Hm rereading your statement now, if they were FLAT, then something else is wrong I guess. The sensors need to be replaced or something?

Last edited by Ilovemycar; 01-29-2013 at 03:41 PM.
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  #6  
Old 01-31-2013, 03:21 PM
andyz0 andyz0 is offline
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Hi. Got a matching tyre and it's fine - decent price and everything but the noise is still there. They reckon the other tyre is misshapen and will put it on the wheel balancer for free to have a look at it. If it's miles off then might need another tyre on the other side. If it's not that that fixes it, then must be the prop shaft or bearing or something!
Apparently the run flat sensors aren't actually sensors, they use tyre rotation and ABS or something (not sure at all) but apparently not a dedicated sensor.

Thanks again
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  #7  
Old 02-01-2013, 08:33 AM
jburke4689 jburke4689 is offline
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If the flywheel is rattling and noisy, it has already failed. It is expensive ($1,200 USD) so I would try and get it replaced with your warranty. You will probably need to pay for new clutch though. I would certainly do that. It is easier for the mechanic and the labor should be free as you need to remove and replace it to replace the flywheel.
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  #8  
Old 02-01-2013, 08:36 AM
andyz0 andyz0 is offline
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Hi.
It hasn't failed yet, it's just on its way out. It's only as noisy as the video, and as Mr Bean said, he has done 60k sounding like that. If it fails I will replace under warranty.
Cheers
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  #9  
Old 04-15-2013, 09:10 PM
04Vrod 04Vrod is offline
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Flywheel noise

Quote:
Originally Posted by jburke4689 View Post
If the flywheel is rattling and noisy, it has already failed. It is expensive ($1,200 USD) so I would try and get it replaced with your warranty. You will probably need to pay for new clutch though. I would certainly do that. It is easier for the mechanic and the labor should be free as you need to remove and replace it to replace the flywheel.
For what it's worth, My friend had purchased a used low mile 2010 328ix. It has 23k miles on the clock. He noticed a clicking noise at idle when he first purchased the car and asked what it was. The noise sounded like it was at the intake manifold. In Feb, he took it to BMW here in Sicily but BMW said that it was past the 2 year European warranty period. It turned out to be the dual mass flywheel. When the transmission was removed, the secondary plate moved in and out as well as moving in the direction of rotation. He replaced the flywheel and the problem is gone.
I find this is bad to have the flywheel or clutch fail at this low mileage.
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  #10  
Old 05-22-2013, 05:13 PM
andyz0 andyz0 is offline
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Two noise problems - flywheel and o/s front wheel

Still got the noise problem- changed wheels as they were a bit buckled. Could the prop shaft be a bit bent or the DMF cause the dull humm at speed. Noticed it makes more noise when turning right, less when left (like bearings have gone, but they have been checked 3 times!).
Also got matching tyres all round


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  #11  
Old 07-03-2013, 02:02 PM
andyz0 andyz0 is offline
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Bump!
Any more ideas?
I've had another idea - coud it be the diff, bushes or CV joints? It is sightly noiser when turning right at speed or going straight, quieter than when turning left.
As I said before it's not the bearings, even though that would be much easier!

Thanks
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  #12  
Old 07-03-2013, 09:05 PM
Pilgrim Pilgrim is offline
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If the tires are all same size, swap tires front and back. If the noise persists it's not the tires.
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  #13  
Old 07-03-2013, 11:33 PM
andyz0 andyz0 is offline
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As per previous posts I've already determined its not the tyres or wheels
Thanks
Andy
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  #14  
Old 07-09-2013, 09:38 AM
andyz0 andyz0 is offline
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Had another garage say it's probably the bearings even though the other ones said it wasn't. He reckons that there might not be any play if the bearings are in the hub. Sounds reasonable - can there be no play with the e90?

Cheers
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  #15  
Old 07-09-2013, 09:55 AM
fdriller9 fdriller9 is offline
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If the humming noise is coming and going while turning, it's most likely your bearings. The rear wheel bearings like to rust and seize to the hub carrier on these cars.

The one I just replaced on my car didn't have any play in it but it was still making noise. I had to replace the whole carrier since I couldn't remove the outer race. Noise is completely gone.
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  #16  
Old 07-09-2013, 10:05 AM
andyz0 andyz0 is offline
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Quote:
Originally Posted by fdriller9 View Post
If the humming noise is coming and going while turning, it's most likely your bearings. The rear wheel bearings like to rust and seize to the hub carrier on these cars.

The one I just replaced on my car didn't have any play in it but it was still making noise. I had to replace the whole carrier since I couldn't remove the outer race. Noise is completely gone.
Yeah more noise when turning right (more force on left of car) and mostly goes when turning left. I thought it was the bearings from the start, but as I was told otherwise I thought I was just being paranoid. It's at 105k. This garage will have a look at it but he is 99% sure it's the bearings (even though there is no play), but if the garage are happy to say "definitely the bearings" then the warranty company will pay out. If they aren't sure then they won't.

Sound is a dull "wuuuubbbb wuuubbb wuuubbbb" at speed (>30mph, more noticeable >50mph, drowned out a bit >80mph - not that I ever go that fast, obviously )

Tasty looking car by the way fdriller9
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  #17  
Old 07-09-2013, 10:45 AM
fdriller9 fdriller9 is offline
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Thanks Andy!

Before I had the bearing replaced, the noise was really noticeable around 40mph. You could distinctly hear the noise come and go when turning around 40mph. Anything faster, you can barely make it out but it still was there making a whurring sound. Anything below 40mph and it was just droning, I guess you could describe it.
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  #18  
Old 06-18-2014, 01:36 AM
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Hogie Hogie is offline
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Quote:
Originally Posted by andyz0 View Post
Yeah more noise when turning right (more force on left of car) and mostly goes when turning left. I thought it was the bearings from the start, but as I was told otherwise I thought I was just being paranoid. It's at 105k. This garage will have a look at it but he is 99% sure it's the bearings (even though there is no play), but if the garage are happy to say "definitely the bearings" then the warranty company will pay out. If they aren't sure then they won't.

Sound is a dull "wuuuubbbb wuuubbb wuuubbbb" at speed (>30mph, more noticeable >50mph, drowned out a bit >80mph - not that I ever go that fast, obviously )

Tasty looking car by the way fdriller9
Did you have the bearing replaced and if so is the noise gone? Having similar sound.

Thanks
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  #19  
Old 06-18-2014, 05:24 AM
andyz0 andyz0 is offline
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Yes, had the bearing replaced and it solved the problem.
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  #20  
Old 06-18-2014, 06:51 PM
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Thanks

I am sure its my problem and I ordered the wheel hub bearing today. I will post back when I replace.

Thanks
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