2011 M3 metallic ping-in sound coming from the rear of the car

Zertag01 · 09-10-2018, 01:33 PM

Hi Everyone

The last two months I have a metallic ping-in sound coming from the rear of the M3 (cowbell) only when moving the car from 1st or stopping and same when I go reverse but when start moving the car sound normal.
1-No rocks stuck in the brake dust shield
2-No bent brake dust shield,
3-I replace the drive shaft U joint

Do you have any idea what can it be ?

See video

gamesfrager · 09-11-2018, 12:24 AM

No idea, but maybe to help diagnose it; take it to a dyno place. So you can run the car in the same spot and be able to inspect it to a degree.
Good luck and hopefully you get to the root cause. This would drive me mad.

09-10-2018, 01:33 PM	#1
Zertag01 Private 0 Rep 52 Posts Drives: 2011 BMW M3 Join Date: May 2016 Location: Washington DC iTrader: (0)	2011 M3 metallic ping-in sound coming from the rear of the car Hi Everyone The last two months I have a metallic ping-in sound coming from the rear of the M3 (cowbell) only when moving the car from 1st or stopping and same when I go reverse but when start moving the car sound normal. 1-No rocks stuck in the brake dust shield 2-No bent brake dust shield, 3-I replace the drive shaft U joint Do you have any idea what can it be ? See video
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09-11-2018, 12:24 AM	#2
gamesfrager Banned 198 Rep 709 Posts Drives: 2011 328i Join Date: Feb 2018 Location: Calgary iTrader: (0)	No idea, but maybe to help diagnose it; take it to a dyno place. So you can run the car in the same spot and be able to inspect it to a degree. Good luck and hopefully you get to the root cause. This would drive me mad.
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