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      07-04-2008, 10:54 AM   #23
GregW / Oregon
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M-Clunk

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Originally Posted by spyderco10 View Post
I noticed this clunk/rattle/springy noise when disengaging the clutch in 1st gear under negative load the first day I bought. I thought mine was defective. I guess everyone's has it?
Yep, it's the M-Clunk. It's been said it's due to less isolation in the drivetrain, as well as the design of the diff. You will learn to minimize it by the way you operate the clutch under such circumstances.
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      07-04-2008, 12:14 PM   #24
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Quote:
Originally Posted by GregW / Oregon View Post
Yep, it's the M-Clunk. It's been said it's due to less isolation in the drivetrain, as well as the design of the diff. You will learn to minimize it by the way you operate the clutch under such circumstances.
It we are talking about the same noise, and I think we are, it is not M specific.
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      07-04-2008, 01:17 PM   #25
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Originally Posted by lucid View Post
Welcome to the world of the BMW MT clunk guys! I even took my E46 to the dealer when it only had 100 miles thinking there is something wrong with the transmission, and they just laughed and told me it was normal.
I never noticed this on my E36 M3. Did I miss it or is it something "new" in the E46 model?
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      07-04-2008, 01:45 PM   #26
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I never noticed this on my E36 M3. Did I miss it or is it something "new" in the E46 model?
I'm pretty sure E36s do not have this. Maybe some other E36 owners can chime in. All MT E46s have it though.
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      07-09-2008, 07:28 AM   #27
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Man, this sound is annoying. I pulled into a parking lot yesterday and a bunch of people were sitting outside eating. My car caught their attention but it wasnt the engine or the look of the car (they had their backs to me), it was the tapping noise that I brought up in this post.....any suggestions on how to minimize?
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      07-09-2008, 07:36 AM   #28
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      07-09-2008, 07:54 AM   #29
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Originally Posted by Hans Delbruck View Post
My 2006 Z4 M Coupe did it too..... until I sold it. Then I didn't hear it anymore....
HAH!
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      07-09-2008, 07:58 AM   #30
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Quote:
Originally Posted by yahtzee View Post
Man, this sound is annoying. I pulled into a parking lot yesterday and a bunch of people were sitting outside eating. My car caught their attention but it wasnt the engine or the look of the car (they had their backs to me), it was the tapping noise that I brought up in this post.....any suggestions on how to minimize?
To make the sound:

When you are going down a neighborhood street with the car in first gear and revving hard at around 3500-4000 rpm - if you take you foot off the gas for 3 seconds while maintaining the RPM's and depress the clutch you will hear the clunk that everyone is talking about.
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      07-09-2008, 04:15 PM   #31
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Quote:
Originally Posted by ericld View Post
To make the sound:

When you are going down a neighborhood street with the car in first gear and revving hard at around 3500-4000 rpm - if you take you foot off the gas for 3 seconds while maintaining the RPM's and depress the clutch you will hear the clunk that everyone is talking about.
Thanks. I know what it sounds like and when it happens...how do you KEEP it from happening?
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      07-20-2008, 02:42 AM   #32
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just picked up my M3 today and noticed this also

Really annoying, the clunking noise almost makes it seem like there is something loose somewhere.
My 2001 330 Cab did the same thing towards the 100000km mark but when that happened , I was told that it was a bushing that was worn around the sway bars/suspension.
The sound on my new M3 is similar to that.
A little worrisome hearing a rattle/clunking on a brand new vehicle. The other M3 I test drove didn't seem to have this noise.
Any suggestions?

RK
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      07-20-2008, 07:01 PM   #33
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Originally Posted by yahtzee View Post
Thanks. I know what it sounds like and when it happens...how do you KEEP it from happening?
by not driving it.
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      08-07-2008, 08:13 AM   #34
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Originally Posted by ericld View Post
by not driving it.
Thanks for the help with this. Truly an asset to the boards.
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      08-07-2008, 11:34 AM   #35
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If you push the clutch in before you load the engine up while decelerating, it will be smooth and quiet. You essentially want open up the clutch in between the state when your engine is pushing your wheels (accel), and your wheel are pushing your engine (decel).
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      08-07-2008, 12:19 PM   #36
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Quote:
Originally Posted by Gemcoska View Post
If you push the clutch in before you load the engine up while decelerating, it will be smooth and quiet. You essentially want open up the clutch in between the state when your engine is pushing your wheels (accel), and your wheel are pushing your engine (decel).
True, but the same noise occurs when i pull into my garage (there is a 2 inch lip on the edge).
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      08-07-2008, 07:31 PM   #37
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Quote:
Originally Posted by Laszlo View Post
It's normal... and it's even noted in the manaul. It was also like this on the e46 M3... and when I got my e90 M3, I prayed it would do the same. And it does... better than the feeling you get when you're eating home-style cooking!
I guess but how do you explain such an odd and abnormal sounding sound to other people?
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      07-06-2011, 12:42 AM   #38
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My new E92 makes this exact same clunking noise.

For those commenting on previous gen cars, my old E36 M3 did not make this noise.

For those who said to engage the clutch before decelerating, it does stop the clunk noise.

I don't think you can hear this sound from outside the vehicle. This is different noise mentioned on other threads. I believe there is some noise while the car is in neutral which stops when the clutch is pushed in. My car does not make this noise, and I do not think it is normal. Get that checked out at the dealer.

Love this forum. Also love the noisy rough cold starts and clutch noises on my new ///M!
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      07-06-2011, 01:09 AM   #39
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Quote:
Originally Posted by Titanium Silver View Post
My new E92 makes this exact same clunking noise.

For those commenting on previous gen cars, my old E36 M3 did not make this noise.

For those who said to engage the clutch before decelerating, it does stop the clunk noise.

I don't think you can hear this sound from outside the vehicle. This is different noise mentioned on other threads. I believe there is some noise while the car is in neutral which stops when the clutch is pushed in. My car does not make this noise, and I do not think it is normal. Get that checked out at the dealer.

Love this forum. Also love the noisy rough cold starts and clutch noises on my new ///M!
You can definitely hear the clutch clunk from outside the vehicle if you don't do anything to mitigate the sound.

Congrats on your new ///m though. Cold starts and being meticulous about warming it up are some of my favorite things about driving the car.
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Last edited by Seattle S65B40; 07-06-2011 at 08:14 AM.
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      07-06-2011, 01:30 AM   #40
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Thanks!

Check out these threads:
http://www.m3post.com/forums/showthr...ch+clunk+noise

http://www.m3post.com/forums/showthr...t=clutch+clunk

General consensus is that this is normal and many people have reported it.

The noise will not occur if you push in the clutch before (or at the same time) you take your foot off the gas when decelerating. The clunk only happens when you accelerate in 1st, take your foot off the gas and slow down, THEN push the clutch in. I wouldn't worry about it.
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      07-06-2011, 01:35 AM   #41
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Quote:
Originally Posted by yahtzee View Post
I guess but how do you explain such an odd and abnormal sounding sound to other people?
You don't need to...
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      07-06-2011, 01:37 AM   #42
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it's the famous M-Clunk...It happend to both e46 and e92 M 6MT and it's normal...
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      07-06-2011, 03:13 AM   #43
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Quote:
Originally Posted by yahtzee View Post
Thanks for the help with this. Truly an asset to the boards.
lmao
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Use the stick like u would a manual. If that doesn't work, put it in D mode and put both hands at 10 and 2. If that doesn't work, just sit on your right hand.
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      07-06-2011, 07:49 AM   #44
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That sound is normal. All new-ish BMW manual transmissions exhibit this. It's all good!
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