M5POST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   M5POST - BMW M5 Forum > BIMMERPOST Universal Forums > General BMW News and Cars Discussion

Post Reply
 
Thread Tools Search this Thread
      07-31-2023, 12:47 PM   #1
Chappers 71
Major General
Chappers 71's Avatar
5226
Rep
5,319
Posts

Drives: Beige G31 40ix m sport
Join Date: Feb 2016
Location: Kent, The Garden of England

iTrader: (0)

Garage List
Squealing M Sport brakes

Out of those of you that have the Brembo Blue M Sport brakes, how many of you have brake squeal at low speed braking? And have any you cured it? If so how??

My front brakes squeal only when theyíve warmed up, for the first 4-6 miles of town driving they make no noise. Once warmed up they squeal when braking to a stop for the last few feet & when slowing down to below 15-10mph.

Itís on new discs (less than 5,000 miles) Iíve swapped out the almost new pads that had been fitted by the supplying dealers for a new set of Brembos & liberally applied brake grease to the backs of pads & shims but nothing Iíve tried has worked.
Iíve spoken to a couple of MD BMW techs & they both said that itís a common issue & nothing can be done to stop it, which if so is a bit annoying
Attached Images
     
__________________
G31 40ix M Sport
E92 335i. E36 328is coupe
E39 540i V8 6SP manual
E34 3.6 M5. E34 525i sport.
VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
Appreciate 0
      07-31-2023, 01:38 PM   #2
ppointer
Major
United_States
725
Rep
1,064
Posts

Drives: '01 Z3M, '12 335is, '22 540i
Join Date: Jul 2013
Location: FLL

iTrader: (4)

Garage List
2012 BMW 335i  [5.25]
2012 BMW 335is  [5.00]
2008 Infiniti QX56  [0.00]
1967 Chevrolet Corv ...  [10.00]
2001 M Roadster  [10.00]
2022 BMW 540i  [0.75]
2009 528i  [9.50]
Have a '22 540i with the m-sport brakes, even same color as yours. At around 2k miles the squealing began. Left it at the dealership for a few days, and they said there is nothing they can do. Happened a little more after that. Then the car sat for most of the winter, and I have heard nothing since. Now have about 6500 miles on it and the brakes are quiet. Nothing else has changed. Basically got the same story from the dealer - nothing you can do about squealing brakes with the m-sport brake option.
Appreciate 1
      07-31-2023, 04:30 PM   #3
koopa
Private
United_States
55
Rep
55
Posts

Drives: '21 M340i xDrive
Join Date: Apr 2014
Location: PNW

iTrader: (0)

Garage List
When I had my old Chevy SS with Brembos, they did the same shims and grease to address squealing. It helps for a bit then comes back. I did read about a copper paste that they apply now that's supposed to actually help a lot but have not personally tried it (different cars but maybe this could be helpful). I think most people "fix" this problem by giving up and switching to different pads.

I have not had the squeal on my M340i yet luckily.

Last edited by koopa; 07-31-2023 at 04:38 PM..
Appreciate 1
      07-31-2023, 04:41 PM   #4
Davesrb
Private
Davesrb's Avatar
184
Rep
57
Posts

Drives: '23 840i, '24 X6 40i, '19 X7
Join Date: Jan 2022
Location: The Emerald Coast of Florida

iTrader: (0)

Garage List
2019 BMW X7  [9.00]
2024 BMW X6 40i  [7.50]
2023 BMW 840i  [0.00]
I have the M Sport Pro with the black calipers. I have had the low speed brake squealing since new. Sounds like it's mostly from the rear. My dealerships mechanic said the only way he knows to fix it is to replace the pads with aftermarket.
Appreciate 2
ppointer725.00
      07-31-2023, 05:47 PM   #5
Chappers 71
Major General
Chappers 71's Avatar
5226
Rep
5,319
Posts

Drives: Beige G31 40ix m sport
Join Date: Feb 2016
Location: Kent, The Garden of England

iTrader: (0)

Garage List
Quote:
Originally Posted by Davesrb View Post
I have the M Sport Pro with the black calipers. I have had the low speed brake squealing since new. Sounds like it's mostly from the rear. My dealerships mechanic said the only way he knows to fix it is to replace the pads with aftermarket.
Yeah mine had, had aftermarket pads already fitted when I bought it & I was hoping that’s what the issue might have been, hence fitting the Brembo pads.

I guess all pad manufacturers must have to make their pads to a certain spec & probably use similar materials.

Seems as though I’m just gonna have to live with it…just wish it wasn’t so loud. I say brake squeal, it’s more like brake screech!
__________________
G31 40ix M Sport
E92 335i. E36 328is coupe
E39 540i V8 6SP manual
E34 3.6 M5. E34 525i sport.
VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
Appreciate 0
      07-31-2023, 06:25 PM   #6
HighlandPete
Lieutenant General
6651
Rep
15,858
Posts

Drives: BMW F11 535i Touring
Join Date: Mar 2007
Location: Scotland, Highland Region

iTrader: (0)

Quote:
Originally Posted by Chappers 71 View Post
Seems as though Iím just gonna have to live with itÖjust wish it wasnít so loud. I say brake squeal, itís more like brake screech!
Don't understand how BMW technicians don't know how to solve the issue.

What's happened to the bonded pads? BMW replacement instructions carry the same bonding detail as the 'snipped' Technical Training document.
Attached Images
 
Appreciate 1
      07-31-2023, 07:07 PM   #7
Redd
Brigadier General
3803
Rep
4,110
Posts

Drives: 2010 BMW E92 M3 Dakar Edition
Join Date: Jul 2015
Location: Malaysia

iTrader: (0)

The best solution for brake squeal is a louder exhaust. Lol
Appreciate 4
chowser511977.00
eugenebmw1221.50
      08-01-2023, 01:03 AM   #8
RonronEG
Lieutenant
330
Rep
462
Posts

Drives: BMW 540i
Join Date: Dec 2020
Location: Northern California

iTrader: (0)

I don't think you can get away from the low speed squeal- think outside temperature plays a role in it as well. Mine do it maybe 1 out of every 10 times on first braking right out of the parking spot when temps are over 90F or so. After that they are completely silent.

I never get squeal like you describe though. I have grease on all the pin contact points between the pad ears and the spring clip. Use bonded Brembo NAO pads, cleaned the pistons and held the brake 3 minutes to get the tape to set. Standard BMW blank rotors, permatex red grease.
Appreciate 2
      08-01-2023, 02:53 PM   #9
Chappers 71
Major General
Chappers 71's Avatar
5226
Rep
5,319
Posts

Drives: Beige G31 40ix m sport
Join Date: Feb 2016
Location: Kent, The Garden of England

iTrader: (0)

Garage List
The non Brembo pads that I changed out weren’t bonded. The replacement Brembos were & I followed the instructions as posted by Highland Pete the first time I fitted them, but after a few miles they made as much noise as the pads I’d replaced.
So when I stripped the brakes down this last time, which was the third time I’d had the pads out the adhesive had worn away where the pistons make contact & some of it had turned into little ‘balls’ of stickyness so I cleaned of the remaining adhesive.
Brakes are now a little quieter but still squeal.

I suppose I could try a set of ceramic pads
__________________
G31 40ix M Sport
E92 335i. E36 328is coupe
E39 540i V8 6SP manual
E34 3.6 M5. E34 525i sport.
VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle

Last edited by Chappers 71; 08-01-2023 at 04:32 PM..
Appreciate 0
      08-02-2023, 11:32 AM   #10
Westside Guy
Brigadier General
Westside Guy's Avatar
United_States
5212
Rep
4,082
Posts

Drives: 2022 Z4 M40i, 2021 228i GC
Join Date: Sep 2021
Location: Hallandale Beach, FL

iTrader: (0)

Garage List
Quote:
Originally Posted by RonronEG View Post
I don't think you can get away from the low speed squeal- think outside temperature plays a role in it as well. Mine do it maybe 1 out of every 10 times on first braking right out of the parking spot when temps are over 90F or so. After that they are completely silent.
I get the same sounds almost all of the time when I pull out of my outdoor parking spot. Where I live in South Florida we have had a ďreal feelĒ temperature of over 100 degrees almost every morning for the last few weeks. In addition, I park right next to the intercoastal and very close to the Atlantic Ocean and I think that there is a little salt buildup on the brakes from the ocean air that might be contributing to the issue.
Appreciate 0
      08-03-2023, 05:49 PM   #11
Chappers 71
Major General
Chappers 71's Avatar
5226
Rep
5,319
Posts

Drives: Beige G31 40ix m sport
Join Date: Feb 2016
Location: Kent, The Garden of England

iTrader: (0)

Garage List
Am pleased to report that after having driven around sixty miles yesterday, when I took the G31 out today the brakes only squeal occasionally now & when they do it’s not as loud as it was, so am pretty happy & hopeful that they may improve further with a few more miles.
__________________
G31 40ix M Sport
E92 335i. E36 328is coupe
E39 540i V8 6SP manual
E34 3.6 M5. E34 525i sport.
VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
Appreciate 0
      08-04-2023, 11:26 AM   #12
RigaTony1982
Lieutenant Colonel
RigaTony1982's Avatar
2258
Rep
1,897
Posts

Drives: 2023 BMW Z4 M40i
Join Date: Mar 2021
Location: Chicago

iTrader: (0)

Garage List
Quote:
Originally Posted by Westside Guy View Post
I get the same sounds almost all of the time when I pull out of my outdoor parking spot. Where I live in South Florida we have had a ďreal feelĒ temperature of over 100 degrees almost every morning for the last few weeks. In addition, I park right next to the intercoastal and very close to the Atlantic Ocean and I think that there is a little salt buildup on the brakes from the ocean air that might be contributing to the issue.
Mine do this if I haven't driven the car in a few days. Same thing on my last car. I don't think it's the ocean.
Appreciate 1
      08-06-2023, 01:06 PM   #13
Westside Guy
Brigadier General
Westside Guy's Avatar
United_States
5212
Rep
4,082
Posts

Drives: 2022 Z4 M40i, 2021 228i GC
Join Date: Sep 2021
Location: Hallandale Beach, FL

iTrader: (0)

Garage List
Quote:
Originally Posted by RigaTony1982 View Post
Mine do this if I haven't driven the car in a few days. Same thing on my last car. I don't think it's the ocean.
My SA suggested that hard braking while driving at high speeds might lessen or resolve the noise issue.
Appreciate 0
      08-07-2023, 02:37 AM   #14
chowser51
Colonel
chowser51's Avatar
United_States
1977
Rep
2,789
Posts

Drives: F33 430 and F39 M35i
Join Date: Feb 2009
Location: Cleveland, OH

iTrader: (3)

Garage List
Didn't BMW release a video that shows M brakes always make some sort of noise?
Appreciate 0
      12-09-2023, 12:31 PM   #15
Chappers 71
Major General
Chappers 71's Avatar
5226
Rep
5,319
Posts

Drives: Beige G31 40ix m sport
Join Date: Feb 2016
Location: Kent, The Garden of England

iTrader: (0)

Garage List
Since stripping down the front brakes, cleaning everything up again, liberally applying Brembo B-quite brake grease, fitting new brake pad adhesive sheets to the pads & holding the brake pedal down for 3 minutes to make sure the pads fully adhere I’m pleased to say that around 95% of brake squeal has now gone & on the odd occasion they start again I have found applying a little light left footed braking quickly cleans up the pads & the brake squeal goes away
__________________
G31 40ix M Sport
E92 335i. E36 328is coupe
E39 540i V8 6SP manual
E34 3.6 M5. E34 525i sport.
VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
Appreciate 0
      12-09-2023, 02:40 PM   #16
M3SQRD
Major General
M3SQRD's Avatar
1718
Rep
5,034
Posts

Drives: E92 M3,G20 330ix,F22 240iX,F82
Join Date: Jun 2009
Location: Mid-Atlantic

iTrader: (11)

Zero brake squeal under heavy or light braking. I definitely keep the brakes bedded well at all times and it certainly helps that I’m a heavy/late on the brakes. Switched to the Essex/AP CP9668/9449 brake kit and still silent braking with Ferodo DS2500 street pads. Also have a set of Carbotech 1521 street pads with no braking issues.

I’d strongly recommend rebedding the brakes if the start to squeal and that should minimize or eliminate the squealing.
Appreciate 0
      12-09-2023, 08:44 PM   #17
Rich.Wolfson
Thaumaturge
175
Rep
207
Posts

Drives: 2014 M235i
Join Date: Jul 2017
Location: Caldwell, NJ

iTrader: (0)

I have been using Hawk HPS 50 pads now for about 20 years on a variety of Mini's and BMWs. I am meticulous about the install and then bedding them in.

They STOP and that is what you want. <G> And no noise and very low dust.

///Rich
Appreciate 0
      12-12-2023, 12:54 PM   #18
co_440i
Private
United_States
96
Rep
87
Posts

Drives: 440i
Join Date: May 2023
Location: Colorado

iTrader: (0)

I have the M Performance brakes with orange calipers and have never heard a sound in ~5 months
Appreciate 0
      01-07-2024, 04:56 PM   #19
RonronEG
Lieutenant
330
Rep
462
Posts

Drives: BMW 540i
Join Date: Dec 2020
Location: Northern California

iTrader: (0)

Was test driving an M850i yesterday and it had the most severe case of this brake squealing I have ever heard. It was ridiculous. I didn't know it could get that bad- don't know how those who have it that bad deal with it. Rode the brakes a little and even did a near ABS stop from 45mph and it was still just as bad.
Appreciate 0
      01-07-2024, 05:13 PM   #20
omasou
Colonel
omasou's Avatar
United_States
2067
Rep
2,999
Posts

Drives: BMWs
Join Date: Apr 2016
Location: US

iTrader: (4)

Garage List
2023 BMW S1000RR  [0.50]
2022 BMW F900XR  [3.00]
2022 BMW X6 40i  [0.50]
2020 BMW M2C  [9.50]
Quote:
Originally Posted by Chappers 71 View Post
Since stripping down the front brakes, cleaning everything up again, liberally applying Brembo B-quite brake grease, fitting new brake pad adhesive sheets to the pads & holding the brake pedal down for 3 minutes to make sure the pads fully adhere I’m pleased to say that around 95% of brake squeal has now gone & on the odd occasion they start again I have found applying a little light left footed braking quickly cleans up the pads & the brake squeal goes away
Perhaps the pads weren't fully mated to the rotors and now they've worn together.

I wouldn't bother w/ceramic pads. Tried a set of Brembo ceramics on my E70 and they were scary. Wouldn't stop the car when cold. Never again.
Appreciate 0
      01-07-2024, 07:28 PM   #21
King_Leonard
Private First Class
152
Rep
172
Posts

Drives: BMW X2 M35i
Join Date: Aug 2019
Location: 3rd World Planet

iTrader: (0)

The solution is for you to lower your window and squeal at the exact frequency but opposite phase of the brake noise.
Appreciate 2
koopa54.50
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 06:03 PM.




m5post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST