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      12-15-2012, 11:16 AM   #1
dreamingat30fps
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Clunking Sound from Passenger Side

I have been noticing this weird clunk usually when turning and going over a bump, but it's hard to pin point exactly what aggravates it. It sounds rubbery to me almost as if you were to smack a tire. First time I thought maybe I hit something on the road with the tire but then it continued to happen. Seems to be coming from the passenger side but I'm not sure if its front or rear.

I have checked the front braces and they appear to be tight, however not sure how to check the rear or what else it could be. I looked at the suspension but to my untrained eye I did not see anything out of the ordinary.

Any ideas?
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      12-15-2012, 12:34 PM   #2
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Is it a pop/clunk like sound right on incline like driveway?
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      12-15-2012, 01:10 PM   #3
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Quote:
Originally Posted by RobMCoupe View Post
Is it a pop/clunk like sound right on incline like driveway?
It is like a pop (rubber not metal) and usually only as I'm turning. I'm not sure if incline makes it worse my driveway is fairly flat.
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      12-15-2012, 01:48 PM   #4
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Quote:
Originally Posted by dreamingat30fps View Post
It is like a pop (rubber not metal) and usually only as I'm turning. I'm not sure if incline makes it worse my driveway is fairly flat.
I had the same noise going up driveway. BMW repaired under warranty.

J#2 10BMZ DRIVEABILITY TECH(S):524 WARRANTY
CUSTOMER STATES THAT THERE IS A POPPING NOISE FROM THE RIGHT
REAR WHEEL AREA WHEN TURNING RIGHT ON INCLINE.
TURN IN ON lHUS DRIVEWAY PER ALEX D.

CONFIRMED ON RIGHT HAND INCLINED DRIVE A BANGING NOISE FROM
UNDERNEATH REAR OF CAR. INSPECTED CAR AND CONNECTED CHASSIS
EARS TO VARIOUS POINTS, SWAY BAR,SUBFRAME ECT. DROVE CAR TO
THAT CREATE NOISE. IN THIS WAY, AFTER SEVERAL TIMES OF REPOS
ITIONING CHASSIS EARS LOCATED NOISE TO SWAY BAR AND R/R BODY
TO SUBFRAME MOUNTING. REMOVED SWAY PIVOT POINTS AND LUBRACAT
ED WITH APPROVED CHASSIS LUB AND REINSTALLED. ALSO FOUND SUB
FRAME BOLT FOR R/R MOST BUSHING LOOSE, RETORQUED. ROAD TESTED
CAR AND FOUND REPAIR EFFECTIVE.
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      12-15-2012, 01:54 PM   #5
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Quote:
Originally Posted by dreamingat30fps View Post
It is like a pop (rubber not metal) and usually only as I'm turning. I'm not sure if incline makes it worse my driveway is fairly flat.
First thing I would do is check the bolts under the hood on the bars going from the strut towers to the firewall. They will make noises like that if loose at all. My 06 had the issue. I torqued them down and haven't heard it in over 3 yrs.
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      12-15-2012, 03:24 PM   #6
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Quote:
Originally Posted by RobMCoupe View Post
I had the same noise going up driveway. BMW repaired under warranty.

J#2 10BMZ DRIVEABILITY TECH(S):524 WARRANTY
CUSTOMER STATES THAT THERE IS A POPPING NOISE FROM THE RIGHT
REAR WHEEL AREA WHEN TURNING RIGHT ON INCLINE.
TURN IN ON lHUS DRIVEWAY PER ALEX D.

CONFIRMED ON RIGHT HAND INCLINED DRIVE A BANGING NOISE FROM
UNDERNEATH REAR OF CAR. INSPECTED CAR AND CONNECTED CHASSIS
EARS TO VARIOUS POINTS, SWAY BAR,SUBFRAME ECT. DROVE CAR TO
THAT CREATE NOISE. IN THIS WAY, AFTER SEVERAL TIMES OF REPOS
ITIONING CHASSIS EARS LOCATED NOISE TO SWAY BAR AND R/R BODY
TO SUBFRAME MOUNTING. REMOVED SWAY PIVOT POINTS AND LUBRACAT
ED WITH APPROVED CHASSIS LUB AND REINSTALLED. ALSO FOUND SUB
FRAME BOLT FOR R/R MOST BUSHING LOOSE, RETORQUED. ROAD TESTED
CAR AND FOUND REPAIR EFFECTIVE.
Will need to get under there and see whats up, thanks!
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      12-15-2012, 03:25 PM   #7
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Quote:
Originally Posted by chickdr View Post
First thing I would do is check the bolts under the hood on the bars going from the strut towers to the firewall. They will make noises like that if loose at all. My 06 had the issue. I torqued them down and haven't heard it in over 3 yrs.
That was my first thought because I did loosen it for another install not too long ago. Do you happen to know what the torque spec is for those? However they do not feel loose.
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      12-15-2012, 04:09 PM   #8
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Rear ARB is a likely suspect like Rob said.

Specs for strut tower torque here. Note that there are two types: one that typically doesn't loosen (bolts are one time use), and the older reusable kind that do often loosen.

http://www.zpost.com/forums/showthread.php?t=504806

Bet it's the ARB though.
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      12-15-2012, 04:37 PM   #9
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Quote:
Originally Posted by Finnegan View Post
Rear ARB is a likely suspect like Rob said.

Specs for strut tower torque here. Note that there are two types: one that typically doesn't loosen (bolts are one time use), and the older reusable kind that do often loosen.

http://www.zpost.com/forums/showthread.php?t=504806

Bet it's the ARB though.
Wow 41NM pretty sure I didn't torque it that much since I just hand tightened. I will go back and make sure they are at 41NM and if I continue to see the issue I will check the ARB.
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      12-16-2012, 08:27 AM   #10
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Sounds silly but check uder the passenger seat. I had a similar clunking sound when going around turns and I just could not find it. When cleaning the car a few days later I found the wife's collaspable umbrella rolling around under the seat.
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      12-21-2012, 07:50 AM   #11
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Just curious- did tightening the bolts solve it?
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      12-21-2012, 09:23 AM   #12
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Quote:
Originally Posted by GeorgeT View Post
Sounds silly but check uder the passenger seat. I had a similar clunking sound when going around turns and I just could not find it. When cleaning the car a few days later I found the wife's collaspable umbrella rolling around under the seat.
The clunk he is talking about (if the same as mine) is very distinctive and would not be replicable by an umbrella, no matter how fast you were turning.
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      12-21-2012, 11:52 AM   #13
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Quote:
Originally Posted by chickdr View Post
Just curious- did tightening the bolts solve it?
I have not driven that much since I tightened the bolts, but I have not heard it since so it may have resolved the issue. Also the issue seems to have started after I replaced my windshield cover which required me to remove those so would make sense.
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      12-22-2012, 01:21 PM   #14
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Quote:
Originally Posted by dreamingat30fps View Post
I have not driven that much since I tightened the bolts, but I have not heard it since so it may have resolved the issue. Also the issue seems to have started after I replaced my windshield cover which required me to remove those so would make sense.
I didn't realize you had removed them prior to it starting- I would bet the farm on it in this case...
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      12-29-2012, 11:59 AM   #15
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Had it checked to day look like ai have to change the Bushing and the stabilizer link....salt air on this island is horrid so they dry rotted out on the left side.
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