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Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking

Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 10-13-2012, 05:21 PM   #1
Gepetto
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Strange noise from rear shocks

Hi everybody,

In August, I had my struts and shocks replaced. I purchased the parts myself (Bilstein HD set from tunermotorsport.com, with spring pads and shock mounts). Ever since I had them installed, when going over bumps the back makes a sort of clunking noise that it never made before. The handling is improved, and accelerating/braking/turning are fine (no noise). Just going over bumps. Is it crappy shock mounts that came with the kit? If so, can these be easily changed to stock BMW mounts?
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Old 10-15-2012, 10:23 AM   #2
scca_ziptie
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What is the condition of your rear sway bar end links? Have your RTABs been replaced yet? What kind of mileage do you have on the car?
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Old 10-15-2012, 11:56 AM   #3
Gepetto
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I don't know the condition of the rear sway bar links. The RTAB, to my knowledge, are the originals. When I had the work done, I told the guys to take care of anything that was worn out and they didn't mention anything.

Before I changed the shocks, though, everything was normal (except I could tell they were worn out by the ride).

How much do the sway bar links and RTAB's cost?
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Old 10-23-2012, 12:29 AM   #4
J LAU
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I have the same issue. I start hearing clunking noise after I got new suspensions.
Noise only occurs under 30mph on light-heavy bumpy surfaces.

I just got a set of UUC RTAB for below $65. Will have them installed next week.

FYI, I changed the RSMs but clunking noise remains. I know one of my Rear Sway bar links is slightly bent since years ago, but I never bothered to change them. I will do the RTABs first and let you know the result. And These bushings including Subframe bushings are not easy to inspect unless you actually take them apart, then you might see some cracks on them.

Last edited by J LAU; 10-23-2012 at 12:33 AM.
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Old 11-05-2012, 11:13 PM   #5
J LAU
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I just had the UUC RTABs installed last night. The clunking noise is still there.
But the RTABs did make a different in handling.

I might try to tighten all the bolts under the car and see what's up.
I suspect its the differential bushing that is bad. =/
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Old 11-05-2012, 11:19 PM   #6
Gepetto
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Is it a dramatic difference in handling? I may try to tighten everything too. I don't think it's the differential though (at least not with me)...it's just on larger bumps I hear a clunk.
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Old 11-06-2012, 12:09 AM   #7
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I have the same problem. I uninstalled and reinstalled the rear struts, tightened rear sway links and still have clunking. Is it possible that bad subframe bushings could cause the clunking?
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Old 11-06-2012, 12:48 AM   #8
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I felt the different with the new RTABs when i went on twisty roads.
But I think the car got bumpier on uneven surfaces.

I might tighten all the bolts on the bushings to try.

Beside the RTABs, I also changed the Rear sway bar links and the clunking noise is still there.
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Old 11-06-2012, 12:48 AM   #9
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Quote:
Originally Posted by euG! View Post
I have the same problem. I uninstalled and reinstalled the rear struts, tightened rear sway links and still have clunking. Is it possible that bad subframe bushings could cause the clunking?
euG! I see that you are in LA. would you like to meet up and see if we have the same problem?
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Old 11-06-2012, 09:41 AM   #10
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Quote:
Originally Posted by J LAU View Post
euG! I see that you are in LA. would you like to meet up and see if we have the same problem?
Pm'd
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Old 11-08-2012, 11:00 AM   #11
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