BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E46 M3 (2001-2006)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


Reply
 
Thread Tools Display Modes
Old Fri, Aug-19-2016, 05:27:09 PM   #1
because_racecar
that's why.
 
because_racecar's Avatar
 
Join Date: Apr 2012
Posts: 756
Reputation: 0 because_racecar is on a distinguished road
Location: Huntington Beach

United States




Default Diff rattle... but not another M-clunk thread

Searching is difficult due to the endless m-clunk threads on the subject and most of the responses in those threads say "SEARCH!"

My rear end is extremely noisy and rattles over bumps and between shifts even at high speeds. I usually drive pretty tame especially between shifts because it's extremely noisy. For example, in neutral, clutch out, going over little dips gives the same clunk sound as the typical m-clunk but it's just much louder and happens frequently. Get back in gear and feels like the gear backlash or driveshaft is slamming pretty hard.

I have aluminum subframe bushings so i'm already aware of the increase in noise and vibrations but the rattle is intense... almost as if my subframe is cracked and rattling. But its not, I'm sure of it.

So my question is, what's the issue? Is this as simple as replacing some parts or do I need a new diff?
__________________

PHOTOS: E46 M3 on WRAPFOLIO.com - PM me for custom vinyl stickers or any vinyl questions.
WHEELS: VOLK TE37-SL Diamond Black // 18x9.5 22mm front 265-35-18 // 18x10.5 20mm rear 275-35-18 dunlop direzza
Jump to top because_racecar is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Fri, Aug-19-2016, 06:43:58 PM   #2
ctres
Registered User
 
ctres's Avatar
 
Join Date: Jun 2015
Age: 23
Posts: 283
Reputation: 0 ctres is on a distinguished road
Location: Detroit Metro

United States




Default Re: Diff rattle... but not another M-clunk thread

Have you checked your diff bolts? They are prone to backing out if you don't have the updated ones.
Jump to top ctres is online now   Reply With Quote
Old Fri, Aug-19-2016, 09:24:02 PM   #3
fattycharged
can't even
 
fattycharged's Avatar
 
Join Date: Aug 2006
Posts: 1,149
In the garage:
Reputation: 0 fattycharged is on a distinguished road
Location: brrrrrrrap

Zimbabwe




Default Re: Diff rattle... but not another M-clunk thread

maybe it's not what you think it is, have you been under the car and made sure everything surrounding is good? I wouldn't assume it's your diff or subframe till you confirm everything is secure & bolted in place, especially if you performed an installation of those aluminum "bushings" recently. Pretty easy to overlook something, and definitely easy for someone else to overlook something if you paid a shop to do the work
__________________
Topo Chico
Jump to top fattycharged is offline   Reply With Quote
Old Fri, Aug-19-2016, 11:38:13 PM   #4
because_racecar
that's why.
 
because_racecar's Avatar
 
Join Date: Apr 2012
Posts: 756
Reputation: 0 because_racecar is on a distinguished road
Location: Huntington Beach

United States




Default Re: Diff rattle... but not another M-clunk thread

Quote:
Originally Posted by fattycharged View Post
maybe it's not what you think it is, have you been under the car and made sure everything surrounding is good? I wouldn't assume it's your diff or subframe till you confirm everything is secure & bolted in place, especially if you performed an installation of those aluminum "bushings" recently. Pretty easy to overlook something, and definitely easy for someone else to overlook something if you paid a shop to do the work
I need to get back under. I've had the car for 4 years and the work was done by the previous owner. It's just worse now than it was. Every gear feels like a huge backlash and slaps together when drag becomes load.
__________________

PHOTOS: E46 M3 on WRAPFOLIO.com - PM me for custom vinyl stickers or any vinyl questions.
WHEELS: VOLK TE37-SL Diamond Black // 18x9.5 22mm front 265-35-18 // 18x10.5 20mm rear 275-35-18 dunlop direzza
Jump to top because_racecar is offline   Reply With Quote
Old Mon, Jul-17-2017, 07:40:04 AM   #5
Skuzm3
Registered User
 
Join Date: Jul 2016
Posts: 2
Reputation: 0 Skuzm3 is on a distinguished road

United States




Default Re: Diff rattle... but not another M-clunk thread

Ever get this sorted out? Btw i have the same car as you its crazy i just stumbled across your page
Attached Images
File Type: jpg IMG_8554.JPG (263.4 KB, 12 views)
Jump to top Skuzm3 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT. The time now is 10:53:34 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright 1999-2017 M3Forum.com
Discussing Diff rattle... but not another M-clunk thread in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)