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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 09-05-2013, 12:15 PM
shane12345 shane12345 is offline
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Location: Leicestershire, UK.
 
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Mein Auto: 1998 318is
Knock from rear, 318is

I know this topic has been covered 5 million times before, but...

I have a dull thud coming from the rear when i change gear, accelerate/brake.
It is driving me mad! Have removed anything from the boot that could be moving, other than the spare wheel and it is still there.

Just spent 150 quid on replacing every bush on the front + wishbones so what could this be? RTABs?

Thanks in advance.
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  #2  
Old 09-05-2013, 12:18 PM
hnaz hnaz is online now
BMW CCA Member
Location: Communist Republic of Maryland
 
Join Date: Dec 2012
Posts: 2,674
Mein Auto: 128i M, M3, 325is M-Tech
Quote:
Originally Posted by shane12345 View Post
I know this topic has been covered 5 million times before, but...

I have a dull thud coming from the rear when i change gear, accelerate/brake.
It is driving me mad! Have removed anything from the boot that could be moving, other than the spare wheel and it is still there.

Just spent 150 quid on replacing every bush on the front + wishbones so what could this be? RTABs?

Thanks in advance.
Sounds like it. When was the last time you refreshed the bushings in the rear? How about the mounting bushing for the differential and subframe?

Cheers!
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Harry // 1995 Avus Blue M3 - 1994 Alpine Weiss 325is M-Tech (converted to a true M3 prototype) - 2010 Black Sapphire Metallic 128i M - Sport // BMW CCA #453346 - North Capitol Chapter
My 325is M-Tech Restoration Thread
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  #3  
Old 09-05-2013, 12:20 PM
shane12345 shane12345 is offline
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Location: Leicestershire, UK.
 
Join Date: Dec 2007
Posts: 152
Send a message via MSN to shane12345
Mein Auto: 1998 318is
The rear bushes have not been changed for a few years as far as i know.

What parts other than the trailing arm bushes should i buy? I may as well overhaul all the rear now i've started lol.
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  #4  
Old 09-05-2013, 01:00 PM
hnaz hnaz is online now
BMW CCA Member
Location: Communist Republic of Maryland
 
Join Date: Dec 2012
Posts: 2,674
Mein Auto: 128i M, M3, 325is M-Tech
Quote:
Originally Posted by shane12345 View Post
The rear bushes have not been changed for a few years as far as i know.

What parts other than the trailing arm bushes should i buy? I may as well overhaul all the rear now i've started lol.
The spacers in the rear control arms. If the bushings have been severely worn down, a gap will become bigger and cause the "thud" as well.
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Harry // 1995 Avus Blue M3 - 1994 Alpine Weiss 325is M-Tech (converted to a true M3 prototype) - 2010 Black Sapphire Metallic 128i M - Sport // BMW CCA #453346 - North Capitol Chapter
My 325is M-Tech Restoration Thread
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