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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > HELP: Suspension Sound??



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      10-05-2011, 09:09 AM   #1
Snyperx
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Question HELP: Suspension Sound??

I was driving yesterday in town and noticed a sound from what I think is the suspension. It almost sounds like rattling change and it doesn't do it over every bump. Any idea as to what this might be? I have only had the car since the 12th, but it is out of warranty since it is a used 2006 325i.

Any help is appreciated.
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      10-06-2011, 10:31 AM   #2
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have you done any suspension modifications lately?
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      10-06-2011, 11:17 AM   #3
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No, have only had the car since the 12th. Everything is stock.
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      10-06-2011, 12:25 PM   #4
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I have a similar sound, only when the temp outside is cold, I hear a rattling like some rocks in a jar coming from the left rear wheel area when going over bumps. As the temp goes up, the sound goes away...
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      10-06-2011, 12:52 PM   #5
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Maybe your shock mounts are starting to fail.
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      10-06-2011, 01:05 PM   #6
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Originally Posted by psre08 View Post
Maybe your shock mounts are starting to fail.
Is that something that I can fix myself?
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      10-06-2011, 01:23 PM   #7
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Failing wheel bearings will sound like marbles in a can.

Jack up your car and check for play. Put your hands at 12 and 6 and push and pull. Also check at 3 and 9.

If it moves, clicks, whatever, it's bad.
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      10-06-2011, 01:54 PM   #8
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It would seem that the e90s have rear bearing that can be replaced and sealed bearings that can not be replaced in the front?
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      10-23-2011, 11:22 AM   #9
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Originally Posted by Snyperx View Post
It would seem that the e90s have rear bearing that can be replaced and sealed bearings that can not be replaced in the front?
Yes/no?? The sound is still present as I have not been able to jack up the car up until I get the jack pads from ECS. Any other things it could be? It seems to be more noticeable with the colder weather. Similar to one of the previous posters in this thread. Really would like to get this fix as it is driving my crazy.
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      10-24-2011, 09:52 AM   #10
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you can jack it up w/out jack pads.
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      10-25-2011, 10:08 AM   #11
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you can jack it up w/out jack pads.
Can you explain? I was under the impression you had to use the jack pad locations.
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      10-25-2011, 11:10 AM   #12
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I'm almost positive its the upper rear shock mount. Yes, it's very easy to replace. I'm not an expert but if you're mechanically inclined you can figure it out just by looking at it. After you install the new ones, make sure the suspension is at full rake (where it would be if it was on the ground) before you tighten it. You can access the bolts by removing the trunk liner.
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      10-25-2011, 11:36 AM   #13
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Quote:
Originally Posted by e90pilot View Post
I'm almost positive its the upper rear shock mount. Yes, it's very easy to replace. I'm not an expert but if you're mechanically inclined you can figure it out just by looking at it. After you install the new ones, make sure the suspension is at full rake (where it would be if it was on the ground) before you tighten it. You can access the bolts by removing the trunk liner.
So I would need this if it ends up being the shock mounts:

http://www.ecstuning.com/BMW-E90-325...ount/ES257117/
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      10-25-2011, 12:23 PM   #14
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Yup.
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      10-27-2011, 05:40 PM   #15
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So the next question I have is it worth just replacing the mounts or should I go for the mounts and rear shocks. I can't believe in order to go to Bilstein shocks I need to fork out $160 each for the HD's. Hell the stock ones by SACHS are $130 each.
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      10-30-2011, 07:39 PM   #16
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i have the same noise..i had a friend jump on the door seal to see where it was coming from...almost sounded like it was coming from the camber adjustment..and noticed only when it got cold..and happens at low speeds like 20mph
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      11-01-2011, 11:08 AM   #17
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I have a similar situation -I think. I don't think it's my shock mounts or end links because I had new ones replaced and installed. While there, I had my mechanic re-torque all of most of the suspension bolts. The noise wasn't as pronounce, but far from being nixed.

Also my noise comes from the front and not the rear. So I'm doubting it's the rear shock mounts for me.

There was another thread where Dan (DSBJ) reported that he jacked his car up and retighten the steering rack bolts (2 qty). He reported positive results. I plan to investing this lead and see if this will cure my culprit of noise.
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Last edited by Thumperx; 11-02-2011 at 11:03 AM.
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