Did the 08 come with a lightweight flywheel?

monterey · 03-29-2016, 01:16 AM

My car sure makes a lot of noises. It sounds like when I put a lightweight fly in my E36 M3. Is that why they got rid of the clutch from 08 because of the excessive noise associated with a lighter flywheel?

BPMSport · 03-29-2016, 01:20 AM

Quote:

Originally Posted by monterey

My car sure makes a lot of noises. It sounds like when I put a lightweight fly in my E36 M3. Is that why they got rid of the clutch from 08 because of the excessive noise associated with a lighter flywheel?

They changed the clutch to be slightly larger and more robust, so the flywheel changed too. What you're describing might be another design consideration to reduce chatter. My 08 clutch and flywheel was more audible the the new setup. The new one I can't hear at all.

pbonsalb · 03-29-2016, 06:30 AM

But I think the latest version of the crank lost 4 lbs so there is partial compensation (even if weight gain and removal equal, the added mass of the larger diameter flywheel has greater effect).

buzz367 · 04-28-2016, 03:06 PM

Did the 08 flywheel chatter lead to any known mechanical defects besides the sound it makes?

IIAp3x · 04-28-2016, 04:17 PM

Quote:

Originally Posted by buzz367

Did the 08 flywheel chatter lead to any known mechanical defects besides the sound it makes?

Honestly mine is very quiet! I don't notice it until mid summer when the A/C is going full blast- then its louder for some reason, but only in neutral while the clutch is not engaged...

And I believe they changed it due primarily to complaints about the noise...

Move Over · 04-28-2016, 04:25 PM

The way it was explained to me is that the 08's had a lighter flywheel which caused some noise. Of course there were a lot of complaints about this noise in the first year so they changed it to a little higher mass flywheel to reduce the noise. C'mon you're buying a racecar! Shouldn't mind a little noise :P

PandaM3 · 04-28-2016, 04:29 PM

My 08 flywheel is a little chatty too... but it doesn't bother me... all the mechanical noises from the flywheel to the whine from the rear diff mounts to my exhaust just add to the eargasm because last V8 BMW racecar for the street

03-29-2016, 01:16 AM	#1
monterey Major 339 Rep 1,239 Posts Drives: 2008 M3 Join Date: Mar 2016 Location: United States iTrader: (1)	Did the 08 come with a lightweight flywheel? My car sure makes a lot of noises. It sounds like when I put a lightweight fly in my E36 M3. Is that why they got rid of the clutch from 08 because of the excessive noise associated with a lighter flywheel? __________________ A job is nothing but work.
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03-29-2016, 06:30 AM	#3
pbonsalb Lieutenant General 5266 Rep 10,650 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	But I think the latest version of the crank lost 4 lbs so there is partial compensation (even if weight gain and removal equal, the added mass of the larger diameter flywheel has greater effect).
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04-28-2016, 03:06 PM	#4
buzz367 Private First Class 33 Rep 135 Posts Drives: E90 BMW M3 Join Date: Nov 2013 Location: San Diego CA iTrader: (0)	Did the 08 flywheel chatter lead to any known mechanical defects besides the sound it makes?
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04-28-2016, 04:25 PM	#6
Move Over Colonel 1258 Rep 2,492 Posts Drives: M3 6MT Join Date: May 2015 Location: Peninsula iTrader: (9)	The way it was explained to me is that the 08's had a lighter flywheel which caused some noise. Of course there were a lot of complaints about this noise in the first year so they changed it to a little higher mass flywheel to reduce the noise. C'mon you're buying a racecar! Shouldn't mind a little noise :P __________________ 2010 E92 M3 DCT
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04-28-2016, 04:29 PM	#7
PandaM3 Captain 470 Rep 988 Posts Drives: Join Date: Apr 2008 iTrader: (6)	My 08 flywheel is a little chatty too... but it doesn't bother me... all the mechanical noises from the flywheel to the whine from the rear diff mounts to my exhaust just add to the eargasm because last V8 BMW racecar for the street
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