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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.


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Old Thu, May-14-2009, 07:33:48 PM   #1
sleepsi
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Default rear end noise while turning right...

i just traded my 02 330ci up to a 02 m3 smg 70k. great trade. i have had this car for about a week or so now and i am hearing a weird rubbing noise in the rear when i turn to the right really hard. i never experienced this noise in my other e46 but i know almost all of the parts are different. also when i shift there is a bump noise in the rear of the car its of course louder the harder im in it. any suggestions? i havent had anyone put it on a lift here. i live in a very small town the closest bmw dealer is 100 miles away! there is only one indie shop and ive heard they are $$$$ thanks for your input everyone.
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Old Thu, May-14-2009, 08:59:16 PM   #2
NJiM3built
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diff fluid! clunk is normal. dont forget...smg shifts hard brah...gotta get used to it
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Old Thu, May-14-2009, 09:09:51 PM   #3
sleepsi
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Quote:
Originally Posted by NJiM3built View Post
diff fluid! clunk is normal. dont forget...smg shifts hard brah...gotta get used to it
i know i need to change it but would any sort of bushing etc etc cause this? i love the smg shift
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Old Thu, May-14-2009, 09:15:59 PM   #4
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ive had experience with this on my m.

Let me guess, it happens when the car is cold, like in the morning or if its been parked for a few hours.?

Common problem on the M's..almost as common as the Clunk or bearing issue !

9/10 its your diff. The clutches inside your diff are causing the noise at the wheels. It starts on the one side, and if u do nothing about it, both wheels will start making the grinding/rubbing noise, it gets worse over time.

Get the diff fluid drained and put in the BMW Diff fluid with FM booster. There is a additive in there that stops the noise. Once the oil is in , do about 8-10 figure 8's , driving in a parking lot or something to get the oil over the diff clutches. the noise should dissapear. If it doesnt, have a tech look at the diff. Worst case is you need to replace the diff, but the fluid should do the job. With my diff, i had a brand new diff in , and 4 mnths later this issue started. Changed the oil and now its better....

Sometiems the bmw techs put in the wrong oil and the noise starts ...theres 2 bmw official oils, the one doesnt have the additive, and this could be your problem.

If i were you, Id get it looked at ASAP, before it gets worse and u do permanent damage.
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Old Fri, May-15-2009, 02:29:11 AM   #5
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http://www.m3forum.net/m3forum/showthread.php?t=264280
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Old Fri, May-15-2009, 05:00:09 AM   #6
NJiM3built
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Originally Posted by sleepsi View Post
i know i need to change it but would any sort of bushing etc etc cause this? i love the smg shift
Sway bar links I believe could be next to look at if the fluid doesnt fix this or maybe a bent control arm. But before freaking out I would change the fluid "yourself" (save you prob 130$) which will take 30minutes ish, 10min of work and 20 of waiting, do as told above doing figure 8s and what not, then move on to the next source if the problem persists.

http://www.m3forum.net/m3forum/showthread.php?t=252529
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Discussing rear end noise while turning right... 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)