Bouncing wheel noise when going over bumps

BMXtreme · 02-08-2008, 12:34 AM

Hi all,

I've got Koni FSD+Eibach installed a few months back and I just realize these noises I've heard was not normal after I switch back to my stock 17" wheels. The noise I am hearing comes from the rear right wheel and it only happens when I go over small bumps. The sound I heard sounds like a fast bouncing basketball - 'thung thung thung thung..' on each bump (I think my wheels are bouncing) . I am not sure anyone has any experience with this. Other than on bumpy roads, I don't hear anything otherwise. Thoughts? Thanks.

bspaceman · 02-08-2008, 01:54 PM

You might want to look at the mounting points where your shocks are mounted. You might have a loose bolt. I had this on my Jetta a while back after a local shop installed some new performance shocks.

BMXtreme · 02-08-2008, 03:39 PM

Quote:

Originally Posted by bspaceman

You might want to look at the mounting points where your shocks are mounted. You might have a loose bolt. I had this on my Jetta a while back after a local shop installed some new performance shocks.

I think i will try tighten the bolts tonite. I found Long's DIY on the rear struts install after I posted this, I thought I have to practically take the seat out to reach the bolts, fortunately I don't, so I will try do it tonight. Weird thing is, if I have some people sitting at the back, I won't get these noises.

VMRWheels · 02-08-2008, 06:50 PM

Based on what you stated, you probably do have some strut bolt loose. The noise probably goes away due to added weight by your passengers. The bolt won't rattle when you've got that weight on the rear.

BoostedBMW · 02-08-2008, 06:56 PM

When I installed my coilovers I also had some clunking sounds going on (like a metal clunk sound), and it was due to not torquing down my struts enough. I would look into that. You can access the rear struts by removing your trunk liner. If you then jack up the rear corner where the noise is coming from you can hold the strut itself to keep it from spinning while you torque down the top nut.

BMXtreme · 02-09-2008, 12:55 AM

Quote:

Originally Posted by BoostedBMW

When I installed my coilovers I also had some clunking sounds going on (like a metal clunk sound), and it was due to not torquing down my struts enough. I would look into that. You can access the rear struts by removing your trunk liner. If you then jack up the rear corner where the noise is coming from you can hold the strut itself to keep it from spinning while you torque down the top nut.

Eh...I just PMed you about this..LOL....didn't check here first. I have the same exact problem. It seems like it keep spinning while I try to torque it down. How did you hold the struts and torque it down at the same time?

BMXtreme · 02-09-2008, 12:59 AM

Quote:

Originally Posted by VMRWheels

Based on what you stated, you probably do have some strut bolt loose. The noise probably goes away due to added weight by your passengers. The bolt won't rattle when you've got that weight on the rear.

I suppose so. If I haven't move across the country from NY to WA, I would have been able to bring it back to the person who installs it for me to help me out. I am lack of tools..lol...kinda do with what I got now, works but the stuts were spinning while I try to torque it down...argh..the noise is really annoying now...hope I could get it fixed soon.

PS: I think i posted this in the wrong section. I know something is a miss

BMW MotorSport · 02-09-2008, 02:41 AM

take it to the dealer to get checked out.

jonerik26 · 02-09-2008, 03:11 AM

when i installed my springs i had the same problem with a clunking sound. i found that it was the nut that sat right on top of the hat underneath the black cap.

BMXtreme · 02-09-2008, 02:49 PM

Mine is a more subtle sound, not clunking but sound like when u held up your wheel in the air and let it drop on the ground and it bounces, those kinda bouncing noise.....very weird.........

BoostedBMW · 02-09-2008, 04:09 PM

Quote:

Originally Posted by BMXtreme

Eh...I just PMed you about this..LOL....didn't check here first. I have the same exact problem. It seems like it keep spinning while I try to torque it down. How did you hold the struts and torque it down at the same time?

I PM'd you back... KW recommended that I use a rubber strap wrench, but that was useless in holding the strut while you torque it down as it would just spin. I also tried a high powered impact wrench, but it still spun. I ended up using vice grips with a ton of rubberbands around the mouth so that it wouldn't scratch anything, and that was the only thing that worked for me.

Chris1337 · 01-05-2020, 08:34 PM

Find a fix for this? I have a light clunk from rear driver side going over smaller bumps. I have BC coilovers

02-08-2008, 12:34 AM	#1
BMXtreme Lieutenant Colonel 57 Rep 1,657 Posts Drives: E60 535i Join Date: May 2007 Location: Redmond, WA iTrader: (3) Garage List 2006 330i [0.00]	Bouncing wheel noise when going over bumps Hi all, I've got Koni FSD+Eibach installed a few months back and I just realize these noises I've heard was not normal after I switch back to my stock 17" wheels. The noise I am hearing comes from the rear right wheel and it only happens when I go over small bumps. The sound I heard sounds like a fast bouncing basketball - 'thung thung thung thung..' on each bump (I think my wheels are bouncing) . I am not sure anyone has any experience with this. Other than on bumpy roads, I don't hear anything otherwise. Thoughts? Thanks.
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02-08-2008, 01:54 PM	#2
bspaceman The Last Beautiful Free Soul On This Planet 15 Rep 627 Posts Drives: Jet Black 335i coupe Join Date: Aug 2007 Location: Cedar Park, TX iTrader: (2)	You might want to look at the mounting points where your shocks are mounted. You might have a loose bolt. I had this on my Jetta a while back after a local shop installed some new performance shocks. __________________ Jet Black/Black Leather 335i coupe (totaled courtesy of the pizza kid Sport/Premi/Comft/Nav - iDrive/Sirius/iPod/OEM Body kit, M Sideskirts, M deck lip, Miro 366s on Nitto 555 NTs, Matte Black Grills, Valentine 1 hardwire, 35% tint, BMS Lighting, BMS computer magic, BMS Dual Cone
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02-08-2008, 06:50 PM	#4
VMRWheels BimmerPost Supporting Vendor 2038 Rep 25,989 Posts Drives: BMW Join Date: Jun 2007 Location: Anaheim, CA iTrader: (4) Garage List 2013 BMW M3 [10.00] 2015 BMW M4 [0.00] 2013 BMW F30 [0.00] 2014 BMW F22 [0.00] 2013 BMW F06 [0.00]	Based on what you stated, you probably do have some strut bolt loose. The noise probably goes away due to added weight by your passengers. The bolt won't rattle when you've got that weight on the rear.
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02-08-2008, 06:56 PM	#5
BoostedBMW Moderator 132 Rep 6,775 Posts Drives: TiAg E92 335 Join Date: Oct 2006 Location: Raleigh, NC iTrader: (14) Garage List 2003 S2000 [0.00]	When I installed my coilovers I also had some clunking sounds going on (like a metal clunk sound), and it was due to not torquing down my struts enough. I would look into that. You can access the rear struts by removing your trunk liner. If you then jack up the rear corner where the noise is coming from you can hold the strut itself to keep it from spinning while you torque down the top nut. __________________ -Michael. Berlina Black S2000 CR is now in the garage l 19" Rial Daytona Race l KW V2 l Eisenhaus Race Exhaust l
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02-09-2008, 02:41 AM	#8
BMW MotorSport Banned 100 Rep 2,528 Posts Drives: 95 Avus M3 and 07 E90 Fam Car! Join Date: Nov 2006 Location: So Cal, Simi Valley iTrader: (4)	take it to the dealer to get checked out.
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02-09-2008, 03:11 AM	#9
jonerik26 Lieutenant Colonel 57 Rep 1,906 Posts Drives: black 335i e90 PRE-LCI Join Date: Apr 2006 Location: somewhere iTrader: (23) Garage List 2007 335i [8.00] 1998 Acura Integra [8.50] 2006 325i [8.00]	when i installed my springs i had the same problem with a clunking sound. i found that it was the nut that sat right on top of the hat underneath the black cap. __________________
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02-09-2008, 02:49 PM	#10
BMXtreme Lieutenant Colonel 57 Rep 1,657 Posts Drives: E60 535i Join Date: May 2007 Location: Redmond, WA iTrader: (3) Garage List 2006 330i [0.00]	Mine is a more subtle sound, not clunking but sound like when u held up your wheel in the air and let it drop on the ground and it bounces, those kinda bouncing noise.....very weird.........
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01-05-2020, 08:34 PM	#12
Chris1337 First Lieutenant 27 Rep 290 Posts Drives: 2012 e92 335i Join Date: Apr 2017 Location: Miami, FL iTrader: (0)	Find a fix for this? I have a light clunk from rear driver side going over smaller bumps. I have BC coilovers
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