Rear brake splash shields (Rock Collectors)

MarksM · 03-20-2017, 08:07 PM

Anyone else have problems with the rear splash shields not sheading gravel? In fact I think they store it just to release it sporadically to annoy me. I think they might be too small to let it the larger one that get in at the gap at the calipers.

schnell325 · 03-20-2017, 10:11 PM

Quote:

Originally Posted by MarksM

Anyone else have problems with the rear splash shields not sheading gravel? In fact I think they store it just to release it sporadically to annoy me. I think they might be too small to let it the larger one that get in at the gap at the calipers.

Yes sir. Same cow bell sound as my E92 had

cooks02 · 03-21-2017, 04:41 AM

Hello All. I know that you hear EVERYTHING in the GTS including the glorious exhaust. But I pulled out onto a clear strait away and floored the excellorator and afterwards for about 3 miles there was a noise that sounded like a screw loose or something. Is this normal? It was like a screw rattling or similar rattling noise. Any thoughts?

TT1351 · 03-21-2017, 05:58 AM

Stone or pebble is brake backing shield. Had this a lot initially with my M4 with ceramic brakes, also experienced this with someone's M3 with standard brakes. Idk why but don't hear it anymore, I'm guessing that the issue.

johnr265 · 03-21-2017, 06:03 PM

Yes, I have the same. The real question is, has anyone ever seen one of those rocks score the ceramic rotors? That would be a big hurt.

MarksM · 03-21-2017, 06:37 PM

Quote:

Originally Posted by johnr265

Yes, I have the same. The real question is, has anyone ever seen one of those rocks score the ceramic rotors? That would be a big hurt.

Exactly my fear.

Oh no sir, we don't cover stone damage on those Cheap rotors.

Need to remove the calipers to check. the back side

VCP · 03-21-2017, 07:26 PM

I know of a guy in Germany that made a mess of his rear rotors. Gouged all inside the park brake area, not good. I will see if I can find the pics, or maybe you do not want to see them

QUOTE=MarksM;21452476]Exactly my fear.

Oh no sir, we don't cover stone damage on those Cheap rotors.

Need to remove the calipers to check. the back side[/QUOTE]

MarksM · 03-21-2017, 10:18 PM

Let's see them if you can find them.

Mapo · 03-22-2017, 06:11 AM

Just bend the shields out away from tire/rotor and problem solved.

VCP · 03-22-2017, 12:11 PM

What that ends up doing is allowing those tiny rocks to enter into the park brake area. I am trying to find pics of a guy that did that and it gouged up the inside of the rotor in the park brake area. This is a issue that requires a new backing plate design

Quote:

Originally Posted by Mapo

Just bend the shields out away from tire/rotor and problem solved.

Charlie@McKennaBMWService · 03-22-2017, 01:16 PM

There's a service bulletin for replacing the rear dust shields with an updated version that should solve that issue, it's unusual that it wasn't done on the GTS models already.

TT1351 · 03-22-2017, 05:22 PM

Quote:

Originally Posted by Charlie@McKennaBMWService

There's a service bulletin for replacing the rear dust shields with an updated version that should solve that issue, it's unusual that it wasn't done on the GTS models already.

Any chance of posting a link to this service bulletin? Tia

schnell325 · 03-22-2017, 07:40 PM

Dare I say the update didn't completely solve the issue?

MarksM · 03-30-2017, 07:19 PM

Quote:

Originally Posted by Mapo

Just bend the shields out away from tire/rotor and problem solved.

Thanks but that did not work very well.

MarksM · 04-04-2017, 04:43 PM

Quote:

Originally Posted by MarksM

Thanks but that did not work very well.

Dealer changed them. And as it turns out the rear bearings need to be R&R based on the way the car was assembled.

We will see if it helps.

MarksM · 04-11-2017, 11:13 AM

Quote:

Originally Posted by MarksM

Dealer changed them. And as it turns out the rear bearings need to be R&R based on the way the car was assembled.

We will see if it helps.

Helped a bunch!

PNWM3 · 04-11-2017, 11:51 AM

Quote:

Originally Posted by Charlie@McKennaBMWService

There's a service bulletin for replacing the rear dust shields with an updated version that should solve that issue, it's unusual that it wasn't done on the GTS models already.

When did it come out? You have a copy you can share?

MarksM · 04-11-2017, 02:14 PM

I will grab the paperwork and let you know.

MarksM · 04-12-2017, 07:34 PM

Info that I got was any car produced before 01/17 is eligible if the owner complains about BAD noises coming from backing plates. New updated plates will be installed.

Probably only those with carbon or within a certain year range.

That was all I was able to get.

PNWM3 · 04-13-2017, 10:12 AM

Quote:

Originally Posted by MarksM

Info that I got was any car produced before 01/17 is eligible if the owner complains about BAD noises coming from backing plates. New updated plates will be installed.

Probably only those with carbon or within a certain year range.

That was all I was able to get.

Thanks! Will push for this when I get the break-in service done in a few weeks. Definitely an issue. Seems to happen almost every time I go out.

iamwingman · 04-13-2017, 10:25 AM

Funny. I'm at dealership right now getting stone remove. I've had the recall dust shield work done. Before, they got in all the time, but you could get them out. Now, if I get one in, I can't get to it. Doesn't happen as often, but it's more a pain in the ass now than it was.

Osiris · 04-13-2017, 08:56 PM

Quote:

Originally Posted by iamwingman

Funny. I'm at dealership right now getting stone remove. I've had the recall dust shield work done. Before, they got in all the time, but you could get them out. Now, if I get one in, I can't get to it. Doesn't happen as often, but it's more a pain in the ass now than it was.

How different do they look. Any pictures?

03-20-2017, 08:07 PM	#1
MarksM Dishonorable Discharged 100 Rep 181 Posts Drives: M3 2012, M4 GTS Sold Join Date: Jun 2008 Location: SoCal iTrader: (1)	Rear brake splash shields (Rock Collectors) Anyone else have problems with the rear splash shields not sheading gravel? In fact I think they store it just to release it sporadically to annoy me. I think they might be too small to let it the larger one that get in at the gap at the calipers.
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03-21-2017, 04:41 AM	#3
cooks02 Enlisted Member 36 Rep 47 Posts Drives: I8 and M4GTS Join Date: Jan 2015 Location: USA iTrader: (0)	Rattling Noise Vibration Hello All. I know that you hear EVERYTHING in the GTS including the glorious exhaust. But I pulled out onto a clear strait away and floored the excellorator and afterwards for about 3 miles there was a noise that sounded like a screw loose or something. Is this normal? It was like a screw rattling or similar rattling noise. Any thoughts?
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03-21-2017, 05:58 AM	#4
TT1351 Captain 512 Rep 932 Posts Drives: 135, GTS, E30 M3+ Join Date: Dec 2008 Location: Massachusetts iTrader: (2)	Stone or pebble is brake backing shield. Had this a lot initially with my M4 with ceramic brakes, also experienced this with someone's M3 with standard brakes. Idk why but don't hear it anymore, I'm guessing that the issue.
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03-21-2017, 06:03 PM	#5
johnr265 Second Lieutenant 179 Rep 230 Posts Drives: 1M Join Date: Apr 2011 Location: East Coast iTrader: (0)	Yes, I have the same. The real question is, has anyone ever seen one of those rocks score the ceramic rotors? That would be a big hurt.
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03-21-2017, 07:26 PM	#7
VCP Colonel 1390 Rep 2,336 Posts Drives: M4GTS BSM/F90comp/BSM M2CS Join Date: Mar 2011 Location: Canada iTrader: (0)	I know of a guy in Germany that made a mess of his rear rotors. Gouged all inside the park brake area, not good. I will see if I can find the pics, or maybe you do not want to see them QUOTE=MarksM;21452476]Exactly my fear. Oh no sir, we don't cover stone damage on those Cheap rotors. Need to remove the calipers to check. the back side[/QUOTE]
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03-21-2017, 10:18 PM	#8
MarksM Dishonorable Discharged 100 Rep 181 Posts Drives: M3 2012, M4 GTS Sold Join Date: Jun 2008 Location: SoCal iTrader: (1)	Let's see them if you can find them.
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03-22-2017, 06:11 AM	#9
Mapo New Member 9 Rep 26 Posts Drives: M4 Join Date: Nov 2016 Location: Audubon,pa iTrader: (0)	Just bend the shields out away from tire/rotor and problem solved.
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03-22-2017, 01:16 PM	#11
Charlie@McKennaBMWService 520 Rep 1,026 Posts Drives: 2018 Shelby GT350 Join Date: Apr 2013 Location: Orange County, CA iTrader: (6) Garage List 2016 Ford Fiesta ST [0.00] 2018 Shelby GT350 [0.00]	There's a service bulletin for replacing the rear dust shields with an updated version that should solve that issue, it's unusual that it wasn't done on the GTS models already. __________________ Instagram: cboy1
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03-22-2017, 07:40 PM	#13
schnell325 Bored at work.... 891 Rep 5,395 Posts Drives: 2016 F82 M4 GTS//2022 M235iGC Join Date: Aug 2007 Location: Comox Valley iTrader: (8)	Dare I say the update didn't completely solve the issue? __________________ Grey Matter:2008 E92 M3:608/425. SG/PS SOLD! Dark Matter:2015 F80 M3:495/505. SOLD! Anti Matter :2016 F82 M4 GTS What next?!? A 2022 M235i GC- I must be getting old
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04-11-2017, 02:14 PM	#18
MarksM Dishonorable Discharged 100 Rep 181 Posts Drives: M3 2012, M4 GTS Sold Join Date: Jun 2008 Location: SoCal iTrader: (1)	I will grab the paperwork and let you know.
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04-12-2017, 07:34 PM	#19
MarksM Dishonorable Discharged 100 Rep 181 Posts Drives: M3 2012, M4 GTS Sold Join Date: Jun 2008 Location: SoCal iTrader: (1)	Info that I got was any car produced before 01/17 is eligible if the owner complains about BAD noises coming from backing plates. New updated plates will be installed. Probably only those with carbon or within a certain year range. That was all I was able to get.
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04-13-2017, 10:25 AM	#21
iamwingman Major 1204 Rep 1,184 Posts Drives: 21 Carrera S, 23 Tesla Model S Join Date: Jun 2014 Location: South Florida iTrader: (0)	Funny. I'm at dealership right now getting stone remove. I've had the recall dust shield work done. Before, they got in all the time, but you could get them out. Now, if I get one in, I can't get to it. Doesn't happen as often, but it's more a pain in the ass now than it was.
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