Needing helg identifying "clonking" sound from rear axle. E91

AntonP · 08-10-2015, 04:31 AM

Hello,

This is my first post on this forum, if this question already has been asked before (and answered) please help me finding it.

I have an E91 from -06, lately i recognised a "clonking" sound from the right back wheel. It appears when braking and accelerating quickly.
I removed the wheel and identifying two bushings looking old and worn out.

Do you guys think this is the problem or is it something else?
Please see attached photos.

Many thanks for your advice and help.

Best Regards, Anton

Tom Droze · 08-10-2015, 08:08 AM

In addition to your subframe bushings being shot, there is a strong likelihood your differential bushings are in the same condition. Worn differential bushings can produce the clunking sound you are experiencing. It would be wise to have the four subframe bushings replaced in addition to your three differential bushings.

AntonP · 08-10-2015, 10:53 AM

Many thanks Tom.

I had a look on RealOEM, and from what I can see there are four subframe bushings (No 3 and No 2).
Which are the differential bushings? is it No 14 and 11?
http://www.realoem.com/bmw/enUS/show...diagId=33_1351

Thanks for your help.

Meeni · 08-12-2015, 11:33 PM

These subframe bushings are beaten to death, they need to be replaced. You may also look into cleaning and protecting the subframe itself, it looks like it starts to rust.

Tom Droze · 08-13-2015, 12:34 AM

Quote:

Originally Posted by AntonP

Many thanks Tom.

I had a look on RealOEM, and from what I can see there are four subframe bushings (No 3 and No 2).
Which are the differential bushings? is it No 14 and 11?
http://www.realoem.com/bmw/enUS/show...diagId=33_1351

Thanks for your help.

Yes, 11 and 14.

Meateatr · 08-13-2015, 10:27 AM

Quote:

Originally Posted by Meeni

These subframe bushings are beaten to death, they need to be replaced. You may also look into cleaning and protecting the subframe itself, it looks like it starts to rust.

I have an '08 and my rear subframe has about the same rust issues being here in the NE, just redid the suspension with B8s/H&R Sports, while I was in there I covered most of the subframe in a wax based lubricant. I think that is a pretty good option.

AntonP · 08-13-2015, 10:59 AM

Many thanks for your answers, the parts are ordered.
Any additional advices before I get going?

Thanks.

Kgolf31 · 08-13-2015, 11:22 AM

Initial thought was a destroyed upper shock mount in the rear (I had mine fail). However if it's only when accelerating and decelerating and not over bumps, then it shouldn't be the case.

I think you're on the right track with subframe bushings + possible diff bushings

AntonP · 08-11-2016, 05:10 AM

Late update: I manufactured a tool with a pipe with a threaded rod and changed the subframe bushings. I didnt change the diff bushings.
Result was a quiet ride!

feuer · 08-11-2016, 11:33 AM

Quote:

Originally Posted by AntonP

Late update: I manufactured a tool with a pipe with a threaded rod and changed the subframe bushings. I didnt change the diff bushings.
Result was a quiet ride!

Please show as photos from this tool and post info on how you built it.

08-10-2015, 04:31 AM	#1
AntonP New Member 0 Rep 7 Posts Drives: BMW 325i E91 -06 Join Date: Apr 2015 Location: Stockholm iTrader: (0)	Needing helg identifying "clonking" sound from rear axle. E91 Hello, This is my first post on this forum, if this question already has been asked before (and answered) please help me finding it. I have an E91 from -06, lately i recognised a "clonking" sound from the right back wheel. It appears when braking and accelerating quickly. I removed the wheel and identifying two bushings looking old and worn out. Do you guys think this is the problem or is it something else? Please see attached photos. Many thanks for your advice and help. Best Regards, Anton Attached Images
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08-10-2015, 08:08 AM	#2
Tom Droze Major 413 Rep 1,286 Posts Drives: 2012 BMW 328i (e92) Join Date: Jul 2014 Location: Scottsdale, Arizona iTrader: (0)	In addition to your subframe bushings being shot, there is a strong likelihood your differential bushings are in the same condition. Worn differential bushings can produce the clunking sound you are experiencing. It would be wise to have the four subframe bushings replaced in addition to your three differential bushings. __________________ 2012 Jet Black 328i Coupe / ESS Tuning Gen. 2 Supercharger / Evolution Racewerks Oil Cooler / BMS Oil Catch Can / BMW Performance Exhaust with Dinan Y Pipe / Eibach Pro Kit Springs / Koni FSD Shocks / MFactory LSD & Differential Bushings / Performance Rear Trailing Arms / BMW Performance Strut Brace / Stop Tech Slotted Rotors / Hawk HPS 5.0 / SS Brake Lines / Brass Guide Pins / M3 Front Control Arms, 28 MM FSB, Engine Cowl, and DCT Paddle Shifters / Michelin PSS / APEX ARC-8
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08-10-2015, 10:53 AM	#3
AntonP New Member 0 Rep 7 Posts Drives: BMW 325i E91 -06 Join Date: Apr 2015 Location: Stockholm iTrader: (0)	Many thanks Tom. I had a look on RealOEM, and from what I can see there are four subframe bushings (No 3 and No 2). Which are the differential bushings? is it No 14 and 11? http://www.realoem.com/bmw/enUS/show...diagId=33_1351 Thanks for your help.
	Appreciate 0 Quote

08-12-2015, 11:33 PM	#4
Meeni Gateropode 332 Rep 2,846 Posts Drives: BMW 330i 06 Join Date: Apr 2012 Location: TN iTrader: (0)	These subframe bushings are beaten to death, they need to be replaced. You may also look into cleaning and protecting the subframe itself, it looks like it starts to rust.
	Appreciate 0 Quote

08-13-2015, 10:59 AM	#7
AntonP New Member 0 Rep 7 Posts Drives: BMW 325i E91 -06 Join Date: Apr 2015 Location: Stockholm iTrader: (0)	Many thanks for your answers, the parts are ordered. Any additional advices before I get going? Thanks.
	Appreciate 0 Quote

08-13-2015, 11:22 AM	#8
Kgolf31 Brigadier General 469 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	Initial thought was a destroyed upper shock mount in the rear (I had mine fail). However if it's only when accelerating and decelerating and not over bumps, then it shouldn't be the case. I think you're on the right track with subframe bushings + possible diff bushings
	Appreciate 0 Quote

08-11-2016, 05:10 AM	#9
AntonP New Member 0 Rep 7 Posts Drives: BMW 325i E91 -06 Join Date: Apr 2015 Location: Stockholm iTrader: (0)	Late update: I manufactured a tool with a pipe with a threaded rod and changed the subframe bushings. I didnt change the diff bushings. Result was a quiet ride!
	Appreciate 0 Quote