[ResIpsaLoquitur]

Originally Posted by MSchfiftyFive

This has been brought up in other threads and there was a manufacturing part revision on the pad between the '21 and '23's (IDK if they did it for '22 or what)

My '21 M5C w/ the steel brakes squealed like a banshee at low speeds (rolling to a stop light or stop sign) the entire time I had it, from the time it left the lot. My '23 M5C has been whisper quiet to the point it made me forget this was such an annoying issue on my '21. I've got 1400 miles on my '23 now and it's been silent the whole time. Someone posted a part rev in another thread a while back, either a batch of '21's got bad stuff to begin with, or the latest rev is just a common part supplier fix for the issue w/o any acknowledgement from BMW, cause it's completely silent now.

^ THIS!

My '19 squealed like a barn full of pigs inside a 30 year old school bus. My '22 is ~95% quieter. I do still get very slight occasional brake squeal, but under very specific circumstances.

There has definitely been some change during the time you mention. Knocking at the door of 5K miles now, where my previous car started squealing consistently in the high hundreds of miles up until I traded it in at 29K.

[josec70]

My Daily is a 20' G05 X5 and I will say that for years the brakes have been very noisy and all I heard from SA and BMW was "it is normal". Fast forward ... about 3 weeks ago I had the front pads replaced under maintenance plan and ZERO brake noise since. It may be way too early to celebrate but maybe the latest revision is across all brake platforms.

22 M5C with CCB's ... quiet and dustless. Loving every minute.

[mitch65]

4300 Miles on my 2023 M5 Comp with steel brakes. Zero noise. Dust not that bad either

[nerdogray]

Steel brakes > CCB's

[AHall]

I have steel brakes and after almost two years I have zero noise but brake dust is bad.

[ResIpsaLoquitur]

Originally Posted by josec70

My Daily is a 20' G05 X5 and I will say that for years the brakes have been very noisy and all I heard from SA and BMW was "it is normal". Fast forward ... about 3 weeks ago I had the front pads replaced under maintenance plan and ZERO brake noise since. It may be way too early to celebrate but maybe the latest revision is across all brake platforms.

22 M5C with CCB's ... quiet and dustless. Loving every minute.

That is great news!

[josec70]

Originally Posted by ResIpsaLoquitur

That is great news!

Time will certainly tell.

[ResIpsaLoquitur]

Originally Posted by josec70

Time will certainly tell.

Absolutely! I'm 5K in on the newer pads — so far, so good! Hoping it'll hold for a couple of years.

[ambletx]

See my post about mid-way down the page.

https://f90.bimmerpost.com/forums/sh...1911294&page=3

TL DR; had ACG/Porterfield on my 2018, and after 1000 miles squeal and dust came back big time. Have iSweep on my 2021 w/ 16k now, and zero squeal with minimal brake dust (about a 95% improvement over OEM). Best mod I've put on the car yet.

[916_M5]

Originally Posted by ambletx

See my post about mid-way down the page.

https://f90.bimmerpost.com/forums/sh...1911294&page=3

TL DR; had ACG/Porterfield on my 2018, and after 1000 miles squeal and dust came back big time. Have iSweep on my 2021 w/ 16k now, and zero squeal with minimal brake dust (about a 95% improvement over OEM). Best mod I've put on the car yet.

+1 I am also using pads from ISWEEP purchased from r33_RGSport . I am very happy with this mod so far. Bite is just a tad less than OEM, Id say about 90% of the bite. But all the squeeking is gone and dust is about 90-95% less than OEM. I went with IS1500 pads. Very happy so far

[Desking101]

Originally Posted by ambletx

See my post about mid-way down the page.

https://f90.bimmerpost.com/forums/sh...1911294&page=3

TL DR; had ACG/Porterfield on my 2018, and after 1000 miles squeal and dust came back big time. Have iSweep on my 2021 w/ 16k now, and zero squeal with minimal brake dust (about a 95% improvement over OEM). Best mod I've put on the car yet.

I thought about swapping to the isweep pads but the rotors are 400+ each. So the squeal and dust doesn't annoy me enough to pay that much until I need to replace anyways

[pbonsalb]

Eeuroparts has the set of 4 rotors for $1117 shipped. They are branded SHW not BMW but SHW makes them for BMW.
https://eeuroparts.com/product/shw-p...nce/4205448KIT
I bought them during the BF sale for something like $980 shipped.

I have not decided on pads yet, maybe the BMW sport pads or something like them. Lower performance and lower dust are not my goal. Would like to see a stopping distance test of fresh 2018-2021 stock pads, the low dust aftermarket isweep 1500, the 2022 stock pads that supposedly reduce dust, and the BMW sport pads. Unlikely such a test will ever be done, though.

You also might be able to have your rotors turned. I thought about it but mine have 43k miles, rust in the vanes, and enough wear that spending the money to turn probably is not worthwhile. I will just change them later this year.

[NYG1121]

BMW should be ashamed of themselves that owners have to go through this. I have had my share of performance cars and never had this problem. Examples include panamera, 911, and AMG GT 4 door currently and many others before it. Considering getting into a F90 but this issue would bother me significantly..

[jivom5]

my brother has a 23 m8 with steels and I have a 22 with steels, his brakes are pretty squeaky but mine are equivalent to an 18 wheeler level of squeaking. both have horrendous amounts of dust.. so i dont think they updated anything on the newer cars

[916_M5]

Originally Posted by Desking101

I thought about swapping to the isweep pads but the rotors are 400+ each. So the squeal and dust doesn't annoy me enough to pay that much until I need to replace anyways

I only replaced the pads and kept the same rotors.

[pbonsalb]

Whether that is a good idea depends on the condition of your rotors. If the surface is smooth and not rippled from wear or pad deposits, then reuse the rotors. If rippled from wear or pad deposits, maybe test with a roloc on a die grinder to see if it is pad deposits that you can remove yourself. If the rotors have ripples but are pretty low mileage and the ripples are not pad deposits you can eliminate yourself, remove the rotors and take them to a machine shop for resurfacing. Drilled rotors can be resurfaced. Factor in your time, the cost of any work you must pay for, and whether the rotors will have enough life left afterwards for the effort and expense to be worthwhile.

I could put $400 worth of new pads on my rippled old rotors without doing anything, but that does not result in the best braking and will result in uneven pad wear and make it more likely I will be buying another set of pads and new rotors before long. People have ground down pads to eliminate uneven wear so maybe that could be an option to reuse the pads if you do new rotors before the new pads wear out.

Lots of options. Pick what suits your needs best. I know a few people who shared a set of race pads they would periodically run on their street cars to clean pad deposits off that tend to accumulate from daily driving with modern street pad formulations. I have never done this.

[SPL2k]

Not to ruin it for the 23 folks. But I have a 23 m5c, a little more than 2k miles, and they have started to squeak only at low speeds, coming to a stop. I daily it in traffic, and usual places.
Normally I would step on the brakes more when coming to a complete stop to fix this, and it works, it lasted a few weeks, now it's started again. Not really annoying loud, but loud enough to hear.

April I'm taking it to the track, I'm sure the squeak will go away, and I'm sure I'll need new brakes as well then. 😆

[ambletx]

Originally Posted by NYG1121

...AMG GT 4 door...

Interesting. I have a few friends with C, E, and GT AMGs that have steel brakes and all of their cars exhibit the same behavior as the F90s with steel brakes.

Also, the merc service gives them the same line of BS that BMW gives us about this being normal for performance brakes. ¯\_(O_o)_/¯

[NYG1121]

Originally Posted by ambletx

Interesting. I have a few friends with C, E, and GT AMGs that have steel brakes and all of their cars exhibit the same behavior as the F90s with steel brakes.

Also, the merc service gives them the same line of BS that BMW gives us about this being normal for performance brakes. ¯\_(O_o)_/¯

Got about 5k miles on my car now and so far nothing. That doesn’t mean it cant change!

[Desking101]

Originally Posted by ambletx

Interesting. I have a few friends with C, E, and GT AMGs that have steel brakes and all of their cars exhibit the same behavior as the F90s with steel brakes.

Also, the merc service gives them the same line of BS that BMW gives us about this being normal for performance brakes. ¯\_(O_o)_/¯

It's a Porsche thing too

[OYMB]

Originally Posted by jm490

Thanks for the feedback that seems more positive than oem. Would you say your happy with them overall? Because the squeaking I get now is unbearable on the oems

I got the Porterfield pads too - front and rear - don't waste your money. They were quiet for a few hundred miles and started squeaking. They don't squeak as bad as the OEMs my car came with (2020 M5 Comp), but they do squeak too much to be acceptable.

I'm just happy to read there are new OEM pads available. I'll get them since I own this car and plan on keeping it.

[aalsayye]

I have a ‘23 M5 (~4800 miles) and the squealing/whistling noise started for me at around 4500 miles. Heading to the dealer for an oil change next week. Is there anything that they can do about this issue? I’ve read the threads but it doesn’t look like there will be something they can do about it..