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Knocking and Creaking from the rear
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- Newbie
- Posts: 32
- Joined: Thu Nov 02, 2017 12:13 pm
Knocking and Creaking from the rear
Not sure if anyone can help me.
I have a 2009 Sdrive 35i. It has developed a knocking and creaking noise from the rear. Mostly heard inside the car, and definitely at low speeds.
I’ve so far changed the springs and also the shocks (twice). We found a damaged vibration absorbers so that was also replaced.
Took it for an MOT last year hoping they’d identify it…. No luck and it passed.
I’ve got some video clips but can’t see how to upload them on here. Probably makes this post a little pointless, but it seems to be getting worse and I’m running out of ideas
Any help gratefully received.
I have a 2009 Sdrive 35i. It has developed a knocking and creaking noise from the rear. Mostly heard inside the car, and definitely at low speeds.
I’ve so far changed the springs and also the shocks (twice). We found a damaged vibration absorbers so that was also replaced.
Took it for an MOT last year hoping they’d identify it…. No luck and it passed.
I’ve got some video clips but can’t see how to upload them on here. Probably makes this post a little pointless, but it seems to be getting worse and I’m running out of ideas
Any help gratefully received.
Knocking and Creaking from the rear
Have you checked the rear bushes in the suspension?
Some people have had issues with the spring and damper not aligned and a 'clonking' sound coming from them?
Something loose in the boot well..battery..wheel brace etc?
Some people have had issues with the spring and damper not aligned and a 'clonking' sound coming from them?
Something loose in the boot well..battery..wheel brace etc?
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- Lifer
- Posts: 4049
- Joined: Sat May 25, 2013 8:27 pm
- Location: Stourbridge
Knocking and Creaking from the rear
When i first bought my car 9 years ago, I had knocking noise like someone hitting underside of boot with rubber mallet.
Final fix was removing right spring, washing rubbers in fairy liquid, coating in talc.
Refit then i turned spring 45 anticlockwise from from the "S1" printed on spring.
I had taken it to BMW but they couldn't fix, but i found this on internet, not a Z bulletin; Problem could be barrel springs pinch the rubber.
No noise since.
The usually occurred if say one rear wheel went over hump. I initially replaced the anti roll bushes with poly, that might also have helped.
I notice in the early days of the cars, a few complaints on the US Zed site.
Final fix was removing right spring, washing rubbers in fairy liquid, coating in talc.
Refit then i turned spring 45 anticlockwise from from the "S1" printed on spring.
I had taken it to BMW but they couldn't fix, but i found this on internet, not a Z bulletin; Problem could be barrel springs pinch the rubber.
No noise since.
The usually occurred if say one rear wheel went over hump. I initially replaced the anti roll bushes with poly, that might also have helped.
I notice in the early days of the cars, a few complaints on the US Zed site.
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- Newbie
- Posts: 32
- Joined: Thu Nov 02, 2017 12:13 pm
Knocking and Creaking from the rear
Thanks for this. I’m hoping to try and get some ideas before I go to the expense and time changing all the rear bushes.
Pretty sure it’s nothing in the boot. The knocking is accompanied by a creaking noise, also happening as soon as the car moves. But thanks for your suggestions
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- Newbie
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- Joined: Thu Nov 02, 2017 12:13 pm
Knocking and Creaking from the rear
Thanks so much for this. I had the springs replaced about two years ago after one broke. I’ve had a suspicion it might have been spring related, but both appeared to be properly seated. I’ll have another look following this bulletinflybobbie wrote: ↑Tue Jun 22, 2021 6:12 pm When i first bought my car 9 years ago, I had knocking noise like someone hitting underside of boot with rubber mallet.
Final fix was removing right spring, washing rubbers in fairy liquid, coating in talc.
Refit then i turned spring 45 anticlockwise from from the "S1" printed on spring.
I had taken it to BMW but they couldn't fix, but i found this on internet, not a Z bulletin;
rubbers.jpg
Problem could be barrel springs pinch the rubber.
No noise since.
The usually occurred if say one rear wheel went over hump. I initially replaced the anti roll bushes with poly, that might also have helped.
I notice in the early days of the cars, a few complaints on the US Zed site.
Thanks for your help
- Reamesy
- Member
- Posts: 652
- Joined: Mon Aug 31, 2020 12:40 pm
- Location: Whitchurch
Knocking and Creaking from the rear
Squirt each bush set in sequence with silicone lube. Then drive before moving to the next set. This should identify squeaks on bushes. Always change in pairs.
That would be my first start otherwise it’s a guessing game at a great expense.
That would be my first start otherwise it’s a guessing game at a great expense.
Currently; 2011 E89 23i SDrive M Sport Highline Titan Silver
Previously;
2014 SLK250CDI AMG Sport
2012 E89 SDrive 2.0 M Sport. White
2011 Audi TT Quattro
2006 Z4 2.5 Sport
2013 420D coupe
2002 Z3 2.2 Sport
1996 Z3 1.9
Previously;
2014 SLK250CDI AMG Sport
2012 E89 SDrive 2.0 M Sport. White
2011 Audi TT Quattro
2006 Z4 2.5 Sport
2013 420D coupe
2002 Z3 2.2 Sport
1996 Z3 1.9
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- Newbie
- Posts: 18
- Joined: Wed Aug 17, 2022 1:33 pm
Knocking and Creaking from the rear
Hi
Did the OP find a solution?
Mine has a creaking sound at the rear when doing low speed in town. On A road or Motorway it’s silent. Suggests some kind of flexing issue is going on. Garage reported no visible broken parts
Thanks
Paul
Did the OP find a solution?
Mine has a creaking sound at the rear when doing low speed in town. On A road or Motorway it’s silent. Suggests some kind of flexing issue is going on. Garage reported no visible broken parts
Thanks
Paul
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- Lifer
- Posts: 4049
- Joined: Sat May 25, 2013 8:27 pm
- Location: Stourbridge
Knocking and Creaking from the rear
Every couple of months i spray every joint and rubber seal with https://groceries.morrisons.com/product ... -369616011
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- Newbie
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- Joined: Wed Aug 17, 2022 1:33 pm
Knocking and Creaking from the rear
Every suspension joint? How do you do that?
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- Lifer
- Posts: 4049
- Joined: Sat May 25, 2013 8:27 pm
- Location: Stourbridge
Knocking and Creaking from the rear
Well not every, just an attempt to keep noises at bay, not sure it does any good.
But no noises.
But no noises.