[fili92]

Originally Posted by (K)

A common complaint with these huge brakes. Below is a snip from the manual. Not ideal but it gets the job done. They also feel better after a little bit of heat.

That's true.
I have 54k km on mine, and maybe 2/3 times per week I need to do 2/3 hard braking to "clear" squealing

[ROBM2C]

I have zero squealing . Stock rotors , stock pads, .

Car has 13000km , I have had it 2-1/2 years and the brakes have never squealed once .

[10SecGG]

Originally Posted by ROBM2C

I have zero squealing . Stock rotors , stock pads, .

Car has 13000km , I have had it 2-1/2 years and the brakes have never squealed once .

How aggressive are you when braking? Light pressure, moderate, or full hard stops?

[ROBM2C]

@10SecGG

I'm pretty aggressive on them , But only once I warm them up .

Same with the engine …I am very polite to her until she's warmed up.

[MMMBRAP]

I still have squeaky brakes. I just live with it, lol.

[10SecGG]

Originally Posted by ROBM2C

@10SecGG

I'm pretty aggressive on them , But only once I warm them up .

Same with the engine …I am very polite to her until she's warmed up.

Super surprised you don’t have any noise… thanks for the feedback.

[10SecGG]

Originally Posted by MMMBRAP

I still have squeaky brakes. I just live with it, lol.

I actually love the school bus analogy one poster described this as. It cracks me up pulling up to a red light now. Turned irritation into comedy.

[MMMBRAP]

Originally Posted by 10SecGG

I actually love the school bus analogy one poster described this as. It cracks me up pulling up to a red light now. Turned irritation into comedy.

Yeah, it's kind of funny to me as well. They're also LOUD as hell (I usually drive with windows and sunroof open on nice days) so I can hear them very well.

When people ask I just say "it's a performance car feature!"

[10SecGG]

Originally Posted by MMMBRAP

Yeah, it's kind of funny to me as well. They're also LOUD as hell (I usually drive with windows and sunroof open on nice days) so I can hear them very well.

When people ask I just say "it's a performance car feature!"

Ha! Love it.

[jritt@essex]

Originally Posted by 10SecGG

OMFG!!! This car is driving me crazy! These factory pads are maddening... Reminds me of my old 997 Porsche Turbo S. Anyone convert to a better/different pad for street driving to prevent this pad squeal? I'm not a track person... I'll be going high speeds, and canyon carving, as well as street driving. Any suggestions appreciated.

As others have noted, brake pad noise is many times of a function of your pads and discs not being bed-in properly. If your discs and pads are not bedded, the brake pad is riding/clamping a piece of raw iron. The two metallic compounds rub together and create squeal. During a bedding cycle, you heat your pads to a temperature at which the pads start to melt a little and stick to the disc face, forming a pad transfer layer. The pad face then rides on a layer of pad material. The pad material on the disc face and on the pad face then mate together and don't make as many metallic screeching noises.

As you drive around with your brakes cold, the friction generated between the pads and discs gradually scrubs off the pad transfer layer on the disc, taking them back down to bare iron. When that occurs, the noises begin again. Pad and disc bedding is not a one and done affair. A pad transfer layer is something that must be maintained as needed. People who track their cars regularly get their brakes hot enough to consistently have the pad material stick to their discs.

Below are a couple videos we produced on pad bedding and swapping between street and track pads. If you understand the concept and mechanisms described in these videos, you'll know everything you need to know to bed any pad or disc in the future.

As for specific pads, we suggest the Ferodo DS2500. It is the best sport pad we're aware of, and some people even use it for light track duty. They are low noise, have great feel, and a very high max operating temp/fade resistance. They are perfect for daily driving, autoX, canyon runs, etc. They aren't cheap, but they're about as close to a unicorn-spec, 'do everything' pad as you'll find. Here are the shapes for your car:

Ferodo DS2500 for Front M2 Comp

Ferodo DS2500 for Rear M2 Comp

Here are the videos on bedding:

[10SecGG]

Originally Posted by jritt@essex

As others have noted, brake pad noise is many times of a function of your pads and discs not being bed-in properly. If your discs and pads are not bedded, the brake pad is riding/clamping a piece of raw iron. The two metallic compounds rub together and create squeal. During a bedding cycle, you heat your pads to a temperature at which the pads start to melt a little and stick to the disc face, forming a pad transfer layer. The pad face then rides on a layer of pad material. The pad material on the disc face and on the pad face then mate together and don't make as many metallic screeching noises.

As you drive around with your brakes cold, the friction generated between the pads and discs gradually scrubs off the pad transfer layer on the disc, taking them back down to bare iron. When that occurs, the noises begin again. Pad and disc bedding is not a one and done affair. A pad transfer layer is something that must be maintained as needed. People who track their cars regularly get their brakes hot enough to consistently have the pad material stick to their discs.

Below are a couple videos we produced on pad bedding and swapping between street and track pads. If you understand the concept and mechanisms described in these videos, you'll know everything you need to know to bed any pad or disc in the future.

As for specific pads, we suggest the Ferodo DS2500. It is the best sport pad we're aware of, and some people even use it for light track duty. They are low noise, have great feel, and a very high max operating temp/fade resistance. They are perfect for daily driving, autoX, canyon runs, etc. They aren't cheap, but they're about as close to a unicorn-spec, 'do everything' pad as you'll find. Here are the shapes for your car:

Ferodo DS2500 for Front M2 Comp

Ferodo DS2500 for Rear M2 Comp

Here are the videos on bedding:

Thank you for this... much appreciated!

[rwemersonrw]

Performance brakes make noise. You should hear my race pads

[10SecGG]

Originally Posted by rwemersonrw

Performance brakes make noise. You should hear my race pads

That’s not a true statement.. I’ve owned 3 Mclaren’s, 4 Porsches, 2 BMW, and 2 Corvettes… only cars I had that make noise are this M2C and my old 997.2 TTS. Rest were as quiet as a church mouse.

[rwemersonrw]

Originally Posted by 10SecGG

That’s not a true statement.. I’ve owned 3 Mclaren’s, 4 Porsches, 2 BMW, and 2 Corvettes… only cars I had that make noise are this M2C and my old 997.2 TTS. Rest were as quiet as a church mouse.

Well then I guess keep playing around with the setup. At least your brake pads don't release a bad odor

[wjones14]

Mine have squealed in normal suburban driving almost since Day 1. I was able to temporarily quiet them by doing several hard stops. Since then the noise occasionally comes back but not as loud or frequent as it once was.

Just did my first track day (with this car) this past Monday and no more squeal. We'll see how long that lasts though.

[10SecGG]

I did some canyon carving this past weekend, and the brakes quieted down on that drive... drove it for the first time today post weekend drive, and the brakes squealed like a hog under a gate first traffic light I came to. I just smiled, and thought to myself. School Bus!

Honestly, it's bothering me less and less... maybe I am just getting used to it, or maybe I'll invest in the pads in the above post from vendor. I haven't yet decided. I do appreciate all the input on this topic so far though.

[gsrbri]

The F8X brakes should have zero noise if you keep everything stock.

Both my M4 and M2 never made a peep w/the factory pads.

It's likely down to lubrication and a wonky set of factory pads.

When I track the cars, I use PFC and Pagid race pads. When going back to stock pads - silence

They are shimmed from the factory and have a mild compound. Shouldn't squeal at all

[bromudez]

Originally Posted by gsrbri

The F8X brakes should have zero noise if you keep everything stock.

Both my M4 and M2 never made a peep w/the factory pads.

It's likely down to lubrication and a wonky set of factory pads.

When I track the cars, I use PFC and Pagid race pads. When going back to stock pads - silence

They are shimmed from the factory and have a mild compound. Shouldn't squeal at all

I wish this was true. I really do.

[PackPride85]

Originally Posted by bromudez

I wish this was true. I really do.

It's true on my f87. Even going swapping back and forth between oem and dtc-60 track pads. Never had issues with noise on the oem pads.

[chris719]

Originally Posted by gsrbri

The F8X brakes should have zero noise if you keep everything stock.

Both my M4 and M2 never made a peep w/the factory pads.

It's likely down to lubrication and a wonky set of factory pads.

When I track the cars, I use PFC and Pagid race pads. When going back to stock pads - silence

They are shimmed from the factory and have a mild compound. Shouldn't squeal at all

It’s a comp/CS issue. Those 2NH brakes will never be quiet with the stock pads.

[jritt@essex]

Gents,

Please keep in mind that the pad transfer layer must be maintained on discs if they are to remain silent. That's one of the reasons we all see so many conflicting reports about XYZ brake pad being noisy or quiet. Owner A says, "Mine never make a peep!", while Owner B says, "My pads sound like a freight train!"

When you bed in your pads/discs and lay down a pad transfer layer, that layer is only temporary. Anytime the brakes are run cold, the pads act in an abrasive manner and the pad transfer layer is perpetually being scraped off. When the brakes are used hard and get hot enough, the pads no longer act in an abrasive mode. Instead, they work in an adherent mode and start to stick to the disc face, laying down a pad transfer layer.

If you drive around with cold brakes in a daily driving style, using them infrequently and lightly, they are in pure abrasive mode. They will be continually scraping off any transfer layer that you had on the discs. Over time they will just get noisier and noisier. Why wouldn't they? There's nothing to quell the noise and vibration between the pad and the disc face.

If you get them hot enough however, they will start to stick to the disc face. They will lay down a thin layer of pad material on the disc face, and the face of the pad itself will conform to the shape of the disc face. The pad face then rides on the layer of pad material on the disc, which acts like a cushion. The pad layer dampens squealing noises and vibration.

This is why many times people are driving around on the street and their pads are making scraping and squealing noises...but when they go to the track, their noises are magically gone. That's just because they didn't get the pads hot enough to switch into adherent mode until they went to the racetrack and got them hot enough to do so. Then for a week after a track day, you drive around on that nice pad transfer layer you laid down and the brakes are silent. Three weeks later however, after lots of street driving, that pad transfer layer starts to wear off because you've only been running the pads in their abrasive mode of operation. The pads are perpetually scraping the discs clean as you go to work, grab groceries, and pick your daughter up from school. Then the dreaded squealies return.

[keylime503]

Originally Posted by jritt@essex

Gents,

Please keep in mind that the pad transfer layer must be maintained on discs if they are to remain silent. That's one of the reasons we all see so many conflicting reports about XYZ brake pad being noisy or quiet. Owner A says, "Mine never make a peep!", while Owner B says, "My pads sound like a freight train!"

When you bed in your pads/discs and lay down a pad transfer layer, that layer is only temporary. Anytime the brakes are run cold, the pads act in an abrasive manner and the pad transfer layer is perpetually being scraped off. When the brakes are used hard and get hot enough, the pads no longer act in an abrasive mode. Instead, they work in an adherent mode and start to stick to the disc face, laying down a pad transfer layer.

If you drive around with cold brakes in a daily driving style, using them infrequently and lightly, they are in pure abrasive mode. They will be continually scraping off any transfer layer that you had on the discs. Over time they will just get noisier and noisier. Why wouldn't they? There's nothing to quell the noise and vibration between the pad and the disc face.

If you get them hot enough however, they will start to stick to the disc face. They will lay down a thin layer of pad material on the disc face, and the face of the pad itself will conform to the shape of the disc face. The pad face then rides on the layer of pad material on the disc, which acts like a cushion. The pad layer dampens squealing noises and vibration.

This is why many times people are driving around on the street and their pads are making scraping and squealing noises...but when they go to the track, their noises are magically gone. That's just because they didn't get the pads hot enough to switch into adherent mode until they went to the racetrack and got them hot enough to do so. Then for a week after a track day, you drive around on that nice pad transfer layer you laid down and the brakes are silent. Three weeks later however, after lots of street driving, that pad transfer layer starts to wear off because you've only been running the pads in their abrasive mode of operation. The pads are perpetually scraping the discs clean as you go to work, grab groceries, and pick your daughter up from school. Then the dreaded squealies return.

This is really good stuff. I swapped over from OEM pads to EBC blues about 2 months. Did one track day and didn't have any squealing for about 1-2 weeks afterwards. I thought I had gotten them bed in properly from the high track temps and I was all set regarding noise on the street.

Boy was I wrong. These things are loud as hell now on the street. I re bed them in and it seemed to be quiet for a few days but then the noise came back. I never fully understood why but having read this post now it all makes sense. Thanks.