Strange Vibration Under Braking

Meff · 03-10-2011, 11:35 PM

Quote:

Originally Posted by rldzhao

This is what the part is. He's referring to the bushing on the left.

I am not 100% convinced but I've also never seen your car in person. Let's hope this is the root cause.

You didn't have to take that off your car just to show me.....

I've been 'Googling' the diagnosis today and have come across others that have experienced a similar steering wheel vibration due to these failing bushings - hoping for a good outcome from the replacement

Will advise.

drburton · 03-11-2011, 07:38 AM

Interesting, my car doesn't go in for another two weeks. I still think there may be a pad deposit issue on mine, but the bushings could be an alternative explanation.

AMPowerJ · 03-11-2011, 07:43 AM

Well again in my case it was definitely something with the brakes not the bushings.

Meff · 03-31-2011, 08:42 PM

So, I had the thrust rod bushings replaced yesterday and they did not fix the problem. So they kept it overnight and dug deeper and found that the RF calliper was not fully releasing (very slightly) and caused the rotor to warp a bit causing the vibration.

Ended up with a rebuilt calliper and two new front rotors and the car drives like a dream again with no vibration at all under the same braking conditions.

All is right with the world again.

eddiek · 04-07-2011, 03:54 PM

I noticed the same thing with braking after replacing my winter wheels with aftermarket wheels and tires. I brought them to the dealer who swapped out the wheels with OEMs. Thankfully, they noticed the same issue and said it was the brake rotors. They were saying that this was the first M3 they've seen with this even since the e46. It's been interesting since I only have 9K miles without bringing it to the track. They said it might happen if the brakes are hot then get doused with water but that sounds strange as well. They're going to replace the front brake rotors and pads. I might have had this before with my winter wheels but it just was not as noticeable.

03-11-2011, 07:38 AM	#24
drburton Lieutenant 116 Rep 468 Posts Drives: e92 M3 Alpine Join Date: Feb 2008 Location: Minneapolis iTrader: (3)	Interesting, my car doesn't go in for another two weeks. I still think there may be a pad deposit issue on mine, but the bushings could be an alternative explanation.
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03-11-2011, 07:43 AM	#25
AMPowerJ One mod leads to another ... 419 Rep 2,900 Posts Drives: 2014 F10 M5 Join Date: Apr 2008 Location: Blythewood, SC iTrader: (10)	Well again in my case it was definitely something with the brakes not the bushings. __________________ Current: 2014 F10 M5 Previous: 2015 F80 M3, 2013 E92 M3, 2013 F10 M5, 2009 E90 M3, 1998 E36 M3
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03-31-2011, 08:42 PM	#26
Meff smiling amid the chaos... 27 Rep 409 Posts Drives: Erratically Join Date: Mar 2010 Location: Cascadia iTrader: (0)	So, I had the thrust rod bushings replaced yesterday and they did not fix the problem. So they kept it overnight and dug deeper and found that the RF calliper was not fully releasing (very slightly) and caused the rotor to warp a bit causing the vibration. Ended up with a rebuilt calliper and two new front rotors and the car drives like a dream again with no vibration at all under the same braking conditions. All is right with the world again.
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04-07-2011, 03:54 PM	#27
eddiek Private 5 Rep 54 Posts Drives: '15 F83 DCT '09 E93 DCT Join Date: Aug 2009 Location: Portland, Oregon iTrader: (0)	I noticed the same thing with braking after replacing my winter wheels with aftermarket wheels and tires. I brought them to the dealer who swapped out the wheels with OEMs. Thankfully, they noticed the same issue and said it was the brake rotors. They were saying that this was the first M3 they've seen with this even since the e46. It's been interesting since I only have 9K miles without bringing it to the track. They said it might happen if the brakes are hot then get doused with water but that sounds strange as well. They're going to replace the front brake rotors and pads. I might have had this before with my winter wheels but it just was not as noticeable.
	Appreciate 0 Quote