Tin Can / Bottom Scraping Noise

bdogk · 03-01-2017, 06:58 PM

Quote:

Originally Posted by 'Cane

I have not had any replication of the noise since I had the repair.

Yes, it appears the retrofit was successful

Stealthm4bcm · 03-01-2017, 07:58 PM

You can also push the brake shield back with your hand.

495evo · 03-01-2017, 08:14 PM

Quote:

Originally Posted by morf13

yeah i have the devil wheels and that happens to me occasionally, but if you brake hard the small rocks usually get unstuck and the noise stops.

'Cane · 03-01-2017, 10:24 PM

Quote:

Originally Posted by hau_nguyen91

Took delivery of my 17 F80 back in late August and was affected by the real differential re-call which didn't get replaced 4 months after.

I always hear this screeeeeeeeeeeeeetch noises in the left rear of my car before the differential replaced mainly on turns.

After it have been replaced, the noises minimal maybe 2-3 times a week of driving.

Today I just experienced literally 10 minutes of driving on turns and straight lines and just screeeeeetch. Its like my exhaust is getting drag on the ground but thats not it.

I have told my dealership about it but they couldn't replicate the same noise.

Someone please help me figure wth is going on!!!!

It's the rear brake shields. There is a service bulletin for them, make an appointment, and tell your SA what you're hearing. I have not heard any noises since having them replaced.

drroc · 03-01-2017, 10:32 PM

Quote:

Originally Posted by 'Cane

It's the rear brake shields. There is a service bulletin for them, make an appointment, and tell your SA what you're hearing. I have not heard any noises since having them replaced.

Do you know the SA number by any chance?

GregW / Oregon · 03-10-2017, 06:31 PM

Quote:

Originally Posted by drroc

Do you know the SA number by any chance?

"SA" means your Service Adviser at your dealer.

GregW / Oregon · 03-10-2017, 06:38 PM

Okay, just had 2nd revised version of replacement "protection plates" installed. First ones I had done August 2015 were part #34-21-2-284-745. These were #34-20-8-053-265 (left) and #34-21-2-284-746 (right). Time will tell if they are better. Winter gravel from roads is slowly being removed.

Downeaster1 · 03-20-2017, 01:06 PM

My shop is actually designing modified covers for the holes that should be shipping out to BMW North America soon. I'll keep everyone updated.

SoCalSM3 · 03-20-2017, 01:22 PM

I've had my car for over a week, 2017 F80 and it happened. What a horrible sound.
I guess I'll have them add the protection plates when I go in for the 1200 mile service.
Are the part #s #34-20-8-053-265 (left) and #34-21-2-284-746 (right) or are there newer ones?

Thanks in advance.

GregW / Oregon · 03-20-2017, 01:24 PM

Quote:

Originally Posted by Downeaster1

My shop is actually designing modified covers for the holes that should be shipping out to BMW North America soon. I'll keep everyone updated.

What holes are you referring to?

GregW / Oregon · 03-20-2017, 01:27 PM

Quote:

Originally Posted by SoCalSM3

I've had my car for over a week, 2017 F80 and it happened. What a horrible sound.
I guess I'll have them add the protection plates when I go in for the 1200 mile service.
Are the part #s #34-20-8-053-265 (left) and #34-21-2-284-746 (right) or are there newer ones?

Those are the latest, however I would think yours would have these updated parts as they started with 10/16 production, I believe. Confirm with your dealer.

Downeaster1 · 03-20-2017, 01:39 PM

Quote:

Originally Posted by GregW / Oregon

What holes are you referring to?

About an inch above the number 14.

GregW / Oregon · 03-20-2017, 01:50 PM

Quote:

Originally Posted by Downeaster1

About an inch above the number 14.

I assume they are there for a reason?

Downeaster1 · 03-20-2017, 04:36 PM

Quote:

Originally Posted by GregW / Oregon

I assume they are there for a reason?

In our testing, we've found excessive road debris is getting ingested through those holes.

GregW / Oregon · 03-20-2017, 04:41 PM

Quote:

Originally Posted by Downeaster1

In our testing, we've found excessive road debris is getting ingested through those holes.

Just wondering why BMW would put them there - any thoughts?

jailonacs99 · 03-20-2017, 07:08 PM

Took my car out for my first long Saturday drive; had this grinding happen not even 15 feet into the only gravel parking lot I drove into.

Rock seems to have fallen out fairly quickly, but as it's a 07/14 build I imagine it still has the original brake plates. Thanks for the info in this thread, I'll try to get this taken care of at my local dealer.

04RC51 · 03-22-2017, 04:29 AM

Quote:

Originally Posted by GregW / Oregon

Okay, just had 2nd revised version of replacement "protection plates" installed. First ones I had done August 2015 were part #34-21-2-284-745. These were #34-20-8-053-265 (left) and #34-21-2-284-746 (right). Time will tell if they are better. Winter gravel from roads is slowly being removed.

Interesting that you had them replaced twice. I had mine done about 1.5 years ago on a first allocation F82. I've had it happen once since replacement but just pushed the plates back and it fell out like usual. At this point, it's more of a hassle than it's worth since they replaced the wheel bearings the first time if I remember correctly.

GregW / Oregon · 03-22-2017, 08:31 AM

Quote:

Originally Posted by 04RC51

At this point, it's more of a hassle than it's worth since they replaced the wheel bearings the first time if I remember correctly.

Yeah, it's fairly involved, but lots of gravel on roads around here this Winter meant more than usual screeching. I had to leave it overnight but had a new 440i cabrio loaner so wasn't much of a pain.

Johnfr · 03-23-2017, 10:08 AM

Pointed this out at my 1200 mile service yesterday to dealer. The sound was even re-created on the spot. BMW has a fix kit for this (replacement of rotor back plates I believe). The dealer is awaiting parts and I will return to get it fixed. Supposedly a 5 hour job.

houstonT · 03-23-2017, 12:14 PM

The dreaded noise hit me last night. First thing I thought was brake shields.....there was some SMALL debris in there but not enough to make those kinds of noises (or so I thought). I've shown my SA this and he is ordering me now shields. Time will tell.
Peter

LukeM15 · 03-26-2017, 06:23 PM

It happened again for the 3rd time while turning into my driveway. Even the wife was like "what was that" me with the scared face said "idk" Hahahaha.

jailonacs99 · 03-26-2017, 11:22 PM

Sorry, I haven't searched this entire thread, I did post here that I've had the screeching of a rock stick against the brake & plate....

But does the active sound also exacerbate the sound of ANY gravel we drive over? This weekend, if I was driving over even paved roads at a crawl with just a little bit of gravel on them, I'm hearing plinking like I'm getting pelted by hail or driving on a dirt road at 60 MPH.

03-01-2017, 07:58 PM	#640
Stealthm4bcm Second Lieutenant 53 Rep 210 Posts Drives: M4 ZCP Join Date: Apr 2016 Location: DE iTrader: (0)	You can also push the brake shield back with your hand.
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03-10-2017, 06:38 PM	#645
GregW / Oregon Commander-In-Chief 2101 Rep 8,911 Posts Drives: 2023 M2 Coupe, 2020 GLE 450 Join Date: Nov 2005 Location: Lake Oswego, OR iTrader: (3) Garage List 2023 M2 Coupe [9.83] 2020 Mercedes GLE 450 [7.25]	Updated brake rotor shields - Round 2 Okay, just had 2nd revised version of replacement "protection plates" installed. First ones I had done August 2015 were part #34-21-2-284-745. These were #34-20-8-053-265 (left) and #34-21-2-284-746 (right). Time will tell if they are better. Winter gravel from roads is slowly being removed. __________________ Greg Lake Oswego, Oregon, USA 2023 M2 Coupe - Brooklyn Grey/Cognac/CF, 6MT; 2020 MB GLE 450
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03-20-2017, 01:06 PM	#646
Downeaster1 BMW Master Tech 587 Rep 850 Posts Drives: E30, E36, E82, E90, F10, F80 Join Date: Jan 2011 Location: SoCal iTrader: (0) Garage List 2015 Aston Martin V ... [0.00] 2010 Lamborghini LP ... [0.00] 1985 Alpina C2 2.7 [0.00] 2017 BMW M3 [0.00] 2008 BMW 128i [10.00] 2013 BMW 135is [0.00] 1992 BMW 325i [0.00]	My shop is actually designing modified covers for the holes that should be shipping out to BMW North America soon. I'll keep everyone updated. __________________ 135is #502 of 586 BMW LED Performance Wheel \| OEM FULL Carbon Fiber \| E9X M3 Gauge Cluster \| E9X Exterior Mirrors \| E9X M3 Full Suspension \| E9X M3 Diff \| PT-CAN2 Enabled \| Bilstiens \| Michelin PSS's \| NBT Navigation Retrofit with Touch Pad
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03-20-2017, 01:22 PM	#647
SoCalSM3 New Member 3 Rep 6 Posts Drives: 2017 BMW M3 Join Date: Mar 2017 Location: Southen California iTrader: (0)	I've had my car for over a week, 2017 F80 and it happened. What a horrible sound. I guess I'll have them add the protection plates when I go in for the 1200 mile service. Are the part #s #34-20-8-053-265 (left) and #34-21-2-284-746 (right) or are there newer ones? Thanks in advance.
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03-20-2017, 07:08 PM	#654
jailonacs99 Captain 484 Rep 793 Posts Drives: 2022 M4 xDrive Competition Join Date: May 2014 Location: Mid-Atlantic iTrader: (2) Garage List 2022 BMW M4 MxDrive ... [0.00]	Took my car out for my first long Saturday drive; had this grinding happen not even 15 feet into the only gravel parking lot I drove into. Rock seems to have fallen out fairly quickly, but as it's a 07/14 build I imagine it still has the original brake plates. Thanks for the info in this thread, I'll try to get this taken care of at my local dealer.
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03-23-2017, 10:08 AM	#657
Johnfr New Member 0 Rep 19 Posts Drives: E92 M3 Coupe Join Date: Oct 2012 Location: Woodland, WA iTrader: (0)	2017 BMW M4 rotor / back plate rubbing Pointed this out at my 1200 mile service yesterday to dealer. The sound was even re-created on the spot. BMW has a fix kit for this (replacement of rotor back plates I believe). The dealer is awaiting parts and I will return to get it fixed. Supposedly a 5 hour job.
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03-23-2017, 12:14 PM	#658
houstonT Second Lieutenant 146 Rep 241 Posts Drives: 2024 M3 CS Join Date: Jan 2008 Location: Dallas, TX iTrader: (0)	The dreaded noise hit me last night. First thing I thought was brake shields.....there was some SMALL debris in there but not enough to make those kinds of noises (or so I thought). I've shown my SA this and he is ordering me now shields. Time will tell. Peter __________________ 2024 BMW M3 CS -- 2021 STO UGR TT -- 2019 McLaren Senna -- 2021 McLaren 765LT -- 1997 Toyota Supra Turbo -- 2006 Ford GT -- 2022 Lamborghini Urus
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03-26-2017, 06:23 PM	#659
LukeM15 Captain 560 Rep 991 Posts Drives: M3 G80 Comp Xdrive Join Date: Nov 2016 Location: Maryland iTrader: (4)	It happened again for the 3rd time while turning into my driveway. Even the wife was like "what was that" me with the scared face said "idk" Hahahaha.
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03-26-2017, 11:22 PM	#660
jailonacs99 Captain 484 Rep 793 Posts Drives: 2022 M4 xDrive Competition Join Date: May 2014 Location: Mid-Atlantic iTrader: (2) Garage List 2022 BMW M4 MxDrive ... [0.00]	Sorry, I haven't searched this entire thread, I did post here that I've had the screeching of a rock stick against the brake & plate.... But does the active sound also exacerbate the sound of ANY gravel we drive over? This weekend, if I was driving over even paved roads at a crawl with just a little bit of gravel on them, I'm hearing plinking like I'm getting pelted by hail or driving on a dirt road at 60 MPH.
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