The dreaded rock in backing plate

JDUNITNOW · 01-14-2022, 12:49 PM

I took my car out yesterday to add some miles so I could get my break-in service done. Going down the street and all of a sudden, I could hear this horrible sqeall and thought it was coming from the car next to me. Once I figured it was me, I panicked and pulled over. Luckily, I was right around the corner from my dealership and proceeded there, but I was thinking what kind of damage was I doing. I pulled into service bay, and as soon as I pulled in, the f!@@#$% rock popped out. The SA laughed his ass off, and of course, I did too.

Custom Install · 01-14-2022, 12:54 PM

Quote:

Originally Posted by JDUNITNOW

I took my car out yesterday to add some miles so I could get my break-in service done. Going down the street and all of a sudden, I could hear this horrible sqeall and thought it was coming from the car next to me. Once I figured it was me, I panicked and pulled over. Luckily, I was right around the corner from my dealership and proceeded there, but I was thinking what kind of damage was I doing. I pulled into service bay, and as soon as I pulled in, the f!@@#$% rock popped out. The SA laughed his ass off, and of course, I did too.

Yip. Happened to me with my first F82, just as I was about to panic it was gone as soon as it appeared

zambarossa · 01-14-2022, 01:46 PM

Similar here on my G8x, a rock must have gotten stuck in the drilled rotors. It sounded more like rubbing and I thought something was wrong since I just had the winter wheels/tires installed. I called the dealership and was on my way to them to get the foreman to check it out when I had to do hard emergency braking. The noise went away after that. Called them again and they said they'd had another car come in with something similar and it was a small rock pebble.

chicagofan00 · 01-14-2022, 02:32 PM

Happened to me a few weeks back. Just did a hard brake and that knocked it lose and it went away.

Kminor2578 · 01-14-2022, 03:08 PM

You get used to it, it's embarrassing as shit but but my F80 and G80 have done it countless times. You learn to live with it

JDUNITNOW · 01-14-2022, 03:18 PM

I understand you can pull the backing plate back a little to reduce the occurrences. I may do this when I take wheels off for a deep clean in the spring.

zambarossa · 01-14-2022, 03:32 PM

Quote:

Originally Posted by Kminor2578

You get used to it, it's embarrassing as shit but but my F80 and G80 have done it countless times. You learn to live with it

Why is it embarrassing?

_E90S65_ · 01-14-2022, 05:20 PM

Ah… memories of the E9X 'cowbell' clunk.

wishman · 01-14-2022, 05:49 PM

Dang. Went through this on my F80. Would happen all the time. Very, very annoying. There was a service bulletin issued to change out the backing plates on that car I believe. Once that was done, went away for good. I'll get my G80 in about a month. Hoping not as persistent as it was early on with the F80.

Indo Rider · 01-14-2022, 05:50 PM

For those posting here (G8x cars only), are you running 19/20s wheels, or 18/19s, or other? I thought this was mostly only an occurrence for the smaller 18/19s?

zambarossa · 01-14-2022, 06:20 PM

Quote:

Originally Posted by Indo Rider

For those posting here (G8x cars only), are you running 19/20s wheels, or 18/19s, or other? I thought this was mostly only an occurrence for the smaller 18/19s?

That was on the summers (826M), which were 19/20.

01-14-2022, 12:49 PM	#1
JDUNITNOW Colonel 3501 Rep 2,365 Posts Drives: BMW 335I, 750li, X5 G80 Join Date: Sep 2019 Location: Glen Allen, Virginia iTrader: (0)	The dreaded rock in backing plate I took my car out yesterday to add some miles so I could get my break-in service done. Going down the street and all of a sudden, I could hear this horrible sqeall and thought it was coming from the car next to me. Once I figured it was me, I panicked and pulled over. Luckily, I was right around the corner from my dealership and proceeded there, but I was thinking what kind of damage was I doing. I pulled into service bay, and as soon as I pulled in, the f!@@#$% rock popped out. The SA laughed his ass off, and of course, I did too. __________________ Formerly Wyndi335I 2009 BMW 750li sold 14 BMW X5 04 BMW X5 11 BMW 335i convertible (sold, sellers market
	Appreciate 0 Tweet Quote

01-14-2022, 01:46 PM	#3
zambarossa Vault Dweller 704 Rep 577 Posts Drives: 2021 M3 6MT (Dravit/KO/ZPP) Join Date: Apr 2014 Location: Ottawa, ON iTrader: (1)	Similar here on my G8x, a rock must have gotten stuck in the drilled rotors. It sounded more like rubbing and I thought something was wrong since I just had the winter wheels/tires installed. I called the dealership and was on my way to them to get the foreman to check it out when I had to do hard emergency braking. The noise went away after that. Called them again and they said they'd had another car come in with something similar and it was a small rock pebble. __________________ Current (delivered 20/10/21): 2021 G80 M3 6MT; Dravit/KO/ZPP; 826M; Sunroof (yes no CF) (More Pictures) Previous: 2018 340ix 6MT Msport(Dec 17-Sep 21); 2013 335ix 6MT Msport (Nov 13-17); 2011 328i 6MT ZSP (Aug 10-Nov 13); 07 323i 6MT ZSP (May 07-Aug 10); 97 318ti MT ZSP (Feb 97-May 07)
	Appreciate 1 JDUNITNOW3501.00 Quote

01-14-2022, 02:32 PM	#4
chicagofan00 Major General 19134 Rep 8,023 Posts Drives: 2024 X5 M60i Join Date: Feb 2011 Location: Phoenix iTrader: (1) Garage List 2024 BMW X5 M60i [10.00]	Happened to me a few weeks back. Just did a hard brake and that knocked it lose and it went away. __________________ Instagram: @Phxrisingphotography Current - 2024 G05 X5 ///M60i in Java Green Past - 2005 E53 X5 3.0i in Titanium Silver; 2008 E92 335i in Montego Blue; 2019 G01 X3 M40i in Glacier Silver; 2022 G80 M3 Competition in Twilight Purple
	Appreciate 0 Quote

01-14-2022, 03:08 PM	#5
Kminor2578 First Lieutenant 237 Rep 331 Posts Drives: 2021 M3 Comp Join Date: Jan 2018 Location: NJ iTrader: (0)	You get used to it, it's embarrassing as shit but but my F80 and G80 have done it countless times. You learn to live with it
	Appreciate 1 JDUNITNOW3501.00 Quote

01-14-2022, 03:18 PM	#6
JDUNITNOW Colonel 3501 Rep 2,365 Posts Drives: BMW 335I, 750li, X5 G80 Join Date: Sep 2019 Location: Glen Allen, Virginia iTrader: (0)	I understand you can pull the backing plate back a little to reduce the occurrences. I may do this when I take wheels off for a deep clean in the spring. __________________ Formerly Wyndi335I 2009 BMW 750li sold 14 BMW X5 04 BMW X5 11 BMW 335i convertible (sold, sellers market
	Appreciate 0 Quote

01-14-2022, 05:20 PM	#8
_E90S65_ Captain 736 Rep 674 Posts Drives: 2021 M340i Join Date: Dec 2020 Location: Pluto iTrader: (0)	Ah… memories of the E9X 'cowbell' clunk. __________________ 2021 M340i Portimao / Cognac 2018 F80 M3 Silverstone / Sakhir (gone) 2015 M235i Estoril / Black (gone) 2011.5 E90 M3 Silverstone / Black (gone)
	Appreciate 0 Quote

01-14-2022, 05:49 PM	#9
wishman Enlisted Member 23 Rep 44 Posts Drives: 2017 M3 / 2016 991 GTS Join Date: Jan 2016 Location: San Jose iTrader: (0)	Dang. Went through this on my F80. Would happen all the time. Very, very annoying. There was a service bulletin issued to change out the backing plates on that car I believe. Once that was done, went away for good. I'll get my G80 in about a month. Hoping not as persistent as it was early on with the F80.
	Appreciate 0 Quote

01-14-2022, 05:50 PM	#10
Indo Rider Captain 543 Rep 731 Posts Drives: 135 Join Date: Apr 2012 Location: United States iTrader: (0)	For those posting here (G8x cars only), are you running 19/20s wheels, or 18/19s, or other? I thought this was mostly only an occurrence for the smaller 18/19s?
	Appreciate 0 Quote