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      11-09-2021, 11:32 AM   #1
Jacob_Tyler_Freed
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Brake Squeal

I have a 2021 M5Competition LCI with steel brakes. I had this issue of brake squeal with my 2019 Comp as well. It's only after the brakes actually warm up and come to a stop at a calm rate.

I will admit I have used them pretty hard at times but they aren't warped and are nowhere's near the end of their life as the car has only 11,000 miles on it.

Has anyone tried anything that works if they had the same issue? Maybe getting the brakes and pads resurfaced?
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      11-09-2021, 12:36 PM   #2
shawnhayes
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Quote:
Originally Posted by Jacob_Tyler_Freed View Post
I have a 2021 M5Competition LCI with steel brakes. I had this issue of brake squeal with my 2019 Comp as well. It's only after the brakes actually warm up and come to a stop at a calm rate.

I will admit I have used them pretty hard at times but they aren't warped and are nowhere's near the end of their life as the car has only 11,000 miles on it.

Has anyone tried anything that works if they had the same issue? Maybe getting the brakes and pads resurfaced?
Change in brake pad is the best solution.

Shawn
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      11-09-2021, 01:27 PM   #3
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Have this issue as well, dealer claims it's normal. Haven't seen a proper fix yet
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      11-09-2021, 09:21 PM   #4
delta
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Irritating and frustrating. I've been there, on most of my rides, though ever so briefly with my LCI M5. (The night is young--I only have 2800 miles.) Comes with the territory of owning a performance vehicle I guess.

In the end, when I first heard "the squeal," I usually tried a few aggressive stops (including in reverse) to see if I could break up any dust build-up or glazing. That worked, but often only temporarily. Sometimes, I took off the brake pads and coated them with products designed to quiet pad vibration, e.g., CRC, Locktite, etc. Perhaps BMW has its own "proprietary" product for same. In most cases, that solution did work.

But what always worked--changing pads. Didn't do it if the squeal wasn't unbearable and I was able to get used to it (especially if the sound didn't occur every time I applied the brakes). But the fix was a pretty solid one. Don't know how the dealer looks at that solution though, what with your M5 still under warranty.

Oh, check out this thread if you haven't seen already: https://f90.bimmerpost.com/forums/sh...1515537&page=2

Good luck.

Last edited by delta; 11-09-2021 at 09:23 PM.. Reason: Clarification
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      11-10-2021, 04:21 PM   #5
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This has been an issue since the early F10 days and there are countless threads on this forum as well as the other M forums. I consider it a "feature" of the car rather than an issue.

From what I can gather, light braking in daily use makes it worse. If you are fairly hard on them, they squeak less.

Also, some have changed pads with success. What it does for warranty claims remains to be seen.

I just took delivery of a 2022 LCI with carbon ceramics. Figured I'd give those a shot to hopefully have less squeal and less dust. 600 miles in and so far so good.
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      11-11-2021, 11:29 AM   #6
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I have 2021 with steel brakes. I took delivery of the car in March 2021. I have no squealing. I read all the brake squealing comments before purchase and I considered not purchasing the car because of this. I decided to roll the dice and order the car all things considered. Some people have the "feature" as someone called it and some don't. I have no issue. I do use the brake hold feature all the time. I was hoping BMW resolved the issue but I guess some people are still experiencing the "feature".
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      11-11-2021, 03:44 PM   #7
shawnhayes
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Quote:
Originally Posted by AHall View Post
I have 2021 with steel brakes. I took delivery of the car in March 2021. I have no squealing. I read all the brake squealing comments before purchase and I considered not purchasing the car because of this. I decided to roll the dice and order the car all things considered. Some people have the "feature" as someone called it and some don't. I have no issue. I do use the brake hold feature all the time. I was hoping BMW resolved the issue but I guess some people are still experiencing the "feature".
For the braking this beast does, it's worth it.

Shawn
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      11-23-2021, 08:17 PM   #8
Jacob_Tyler_Freed
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Quote:
Originally Posted by shawnhayes View Post
Quote:
Originally Posted by Jacob_Tyler_Freed View Post
I have a 2021 M5Competition LCI with steel brakes. I had this issue of brake squeal with my 2019 Comp as well. It's only after the brakes actually warm up and come to a stop at a calm rate.

I will admit I have used them pretty hard at times but they aren't warped and are nowhere's near the end of their life as the car has only 11,000 miles on it.

Has anyone tried anything that works if they had the same issue? Maybe getting the brakes and pads resurfaced?
Change in brake pad is the best solution.

Shawn
You think maybe getting them resurfaced would work? Definitely a cheaper solution and I know BMW does it for free. (At least it's free for me).
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      11-23-2021, 10:12 PM   #9
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Some say it is just pad deposits and not uneven metal. If that is true, running a set of race pads for a day or 2 would wipe the rotor surface clean. I try to stand hard on the brakes regularly and notice more squeaking when I have not done that in a while.
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      11-28-2021, 07:28 PM   #10
delta
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Quote:
Originally Posted by pbonsalb View Post
"...I try to stand hard on the brakes regularly and notice more squeaking when I have not done that in a while."
+1
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      11-29-2021, 05:57 PM   #11
shawnhayes
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Quote:
Originally Posted by Jacob_Tyler_Freed View Post
You think maybe getting them resurfaced would work? Definitely a cheaper solution and I know BMW does it for free. (At least it's free for me).
It'll reduce it for a little while. But if you don't bed them properly (not easy to do on the street) it may come back.

Shawn
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      11-29-2021, 05:59 PM   #12
shawnhayes
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Quote:
Originally Posted by pbonsalb View Post
Some say it is just pad deposits and not uneven metal. If that is true, running a set of race pads for a day or 2 would wipe the rotor surface clean. I try to stand hard on the brakes regularly and notice more squeaking when I have not done that in a while.
I have to agree that this is true. Having run some more aggressive pads, I had very little noise in my 18 M5 after a good hard track weekend.

Shawn
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      01-12-2022, 01:59 AM   #13
Jacob_Tyler_Freed
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Update: the brake squeal was deemed not normal by BMW North America, and they replaced all pads and rotors on the car.

My guess is the rotors got overheated and didn't cool properly.

Luckily the brakes are as quiet as ever. I'm gonna try to keep it that way, and make sure they cool down properly after hard use.
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      01-12-2022, 12:49 PM   #14
shawnhayes
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Quote:
Originally Posted by Jacob_Tyler_Freed View Post
Update: the brake squeal was deemed not normal by BMW North America, and they replaced all pads and rotors on the car.

My guess is the rotors got overheated and didn't cool properly.

Luckily the brakes are as quiet as ever. I'm gonna try to keep it that way, and make sure they cool down properly after hard use.
Thanks for getting back.

However, bet you at least a quarter it comes back within a year or less.

Shawn
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      01-12-2022, 01:45 PM   #15
pbonsalb
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That is my thought as well.
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      01-12-2022, 06:10 PM   #16
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Quote:
Originally Posted by Jacob_Tyler_Freed View Post
Update: the brake squeal was deemed not normal by BMW North America, and they replaced all pads and rotors on the car.

My guess is the rotors got overheated and didn't cool properly.

Luckily the brakes are as quiet as ever. I'm gonna try to keep it that way, and make sure they cool down properly after hard use.
Jacob_Tyler_Freed Just out of curiosity, what do you consider hard use?
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      01-13-2022, 01:26 AM   #17
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Quote:
Originally Posted by Jacob_Tyler_Freed View Post
Update: the brake squeal was deemed not normal by BMW North America, and they replaced all pads and rotors on the car.

My guess is the rotors got overheated and didn't cool properly.

Luckily the brakes are as quiet as ever. I'm gonna try to keep it that way, and make sure they cool down properly after hard use.
Where was this posted? What will they do for my brakes? Change ?
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      01-13-2022, 08:29 AM   #18
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Quote:
Originally Posted by 916_M5 View Post
Where was this posted? What will they do for my brakes? Change ?
916_M5 how many miles are on your car? Also do you track your M5?
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      01-13-2022, 11:30 AM   #19
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Next time dealer says it's normal show them this video and I quote: if the noise is temporary it's not a problem if the noise persists go to a dealership
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      01-13-2022, 08:14 PM   #20
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Quote:
Originally Posted by AHall View Post
Quote:
Originally Posted by 916_M5 View Post
Where was this posted? What will they do for my brakes? Change ?
916_M5 how many miles are on your car? Also do you track your M5?
Don't track. 25k miles
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