[Tag]

His mods are simple and reversable. The HAS kit it the biggest PIA to reverse but you can still revert it back to factory if you want.

I would hardly call a stud conversion kit, spacers, CF strut tower brace or a HAS kit warranty voiding things to do to a car. Even the tech didn't go that far. They just asked he put it back to stock so they can diagnose it.

The OP said he was having this issue before modding anything. I would say if that's the case he should have had it addressed before doing anything to the car to avoid the hassle. That said, it really matters who you are dealing with when taking it in for service. If you get someone that's not willing to help you take it somewhere else.

[KC87ZB]

I don't know why the OP doesn't just remove the pads and ensure everything seems in order first. That's what I would have done, especially if my car was modified.

[KevM2]

Originally Posted by tracer bullet

I haven't seen it mentioned, so I'll mention it. In my experience squealing tends to come from either 1) too aggressive a pad for the situation, or 2) not aggressive enough use of the pads.

You can't baby aggressive brake pads. If you do a lot of light stops, i.e. in-town driving, you should also find the time to occasionally do some aggressive stops as well. And don't expect a quiet brake pad that's also aggressive, these aren't Forester's, they're M2's. Quiet / noise / dust are all sort of a balancing act.

If you have squealing or are feeling it in the steering wheel (uneven pad deposits on the rotors), read up on brake bed-in procedures and give them a try. I've seen that solve the issue so many times in real life and after being suggested on forums. It's free to try, and won't hurt anything.

Also if you clean your car all the time, and are using products like Sonax and such to get brake dust off the wheels, use some caution with it on the rotors. You might remove a beneficial layer on the rotor, and even do so unevenly.

Agree with this! I’d bet the problem is from brake deposits causing that one wheel to slip a bit during a stop which maybe it triggers abs or the slip itself causes the vibration. OP should do some agressive braking for a proper bedding-in of the brakes which would be easy enough to do before removing all mods and wasting time with the dealer… if this doesn’t work then swapping out the pads would be the next easy option

[Lappy]

So as im going through the run in process, I decided to test this Apex theory of brakes squeeling with forged wheels. Plopped on my Apex forged wheels, sure as shit, brake squeel. Took them off, brakes are silent. Never would have guessed that.

[VehicleVirals]

Originally Posted by KevM2

Agree with this! I’d bet the problem is from brake deposits causing that one wheel to slip a bit during a stop which maybe it triggers abs or the slip itself causes the vibration. OP should do some agressive braking for a proper bedding-in of the brakes which would be easy enough to do before removing all mods and wasting time with the dealer… if this doesn’t work then swapping out the pads would be the next easy option

It's both front wheels, what a coincidence. Bedding the brakes seems to help temperarly. I really do think the pads are compromised. Almost as if they are glazed. I'm odering new low dust pads and will report back on here and with a video.

[KevM2]

Originally Posted by VehicleVirals

It's both front wheels, what a coincidence. Bedding the brakes seems to help temperarly. I really do think the pads are compromised. Almost as if they are glazed. I'm odering new low dust pads and will report back on here and with a video.

Speaking of which, can people who have tried low dust pads chime in with which ones they’ve switched to and how it compares to stock and if they recommend it?

[Tag]

Originally Posted by Lappy

So as im going through the run in process, I decided to test this Apex theory of brakes squeeling with forged wheels. Plopped on my Apex forged wheels, sure as shit, brake squeel. Took them off, brakes are silent. Never would have guessed that.

I would have never guessed that either. Makes me wonder if some type of light weight material could be added to the inside of the rim to act as a damper. Something like double sided foam tape. Hmmm.

[DSTR]

Originally Posted by KC87ZB

I don't know why the OP doesn't just remove the pads and ensure everything seems in order first. That's what I would have done, especially if my car was modified.

Simple logic eludes him it appears. There are simple things to try and assess before engaging the dealer.

[JamnF87]

Originally Posted by DSTR

Simple logic eludes him it appears. There are simple things to try and assess before engaging the dealer.

Ha yea, going to try fixing it with more aftermarket parts too.

[DSTR]

Originally Posted by JamnF87

Ha yea, going to try fixing it with more aftermarket parts too.

And another video to monetize his self made situation.

[baron95]

Originally Posted by Lappy

So as im going through the run in process, I decided to test this Apex theory of brakes squeeling with forged wheels. Plopped on my Apex forged wheels, sure as shit, brake squeel. Took them off, brakes are silent. Never would have guessed that.

Good that you verified/reproduced it. It is quite amazing how little changes can amplify resonance in the brake system.

I can't find the post, but I remember APEX or a BMW SB mentioning/recommending some sort of disk insert to place between the brake hat and hub. (sorry, can't remember more details)

Maybe you can look into it as a way to quiet everything down.

EDIT: I think the part number below is the friction ring to use (from BMW SB)

Part # 34 10 6 884 839 Friction Ring wheel bolt pattern 5x112 2

[Lappy]

Originally Posted by baron95

Good that you verified/reproduced it. It is quite amazing how little changes can amplify resonance in the brake system.

I can't find the post, but I remember APEX or a BMW SB mentioning/recommending some sort of disk insert to place between the brake hat and hub. (sorry, can't remember more details)

Maybe you can look into it as a way to quiet everything down.

EDIT: I think the part number below is the friction ring to use (from BMW SB)

Part # 34 10 6 884 839 Friction Ring wheel bolt pattern 5x112 2

I personally don't mind, these are my competition wheels with very limited street driving. For day to day use I use stock wheels and tires.

[baron95]

Originally Posted by Lappy

I personally don't mind, these are my competition wheels with very limited street driving. For day to day use I use stock wheels and tires.

I hear you. I got a takeoff set of 826M M3/M4 wheels for the track/summer tires, and will use the 930M OEMs for street/winter.

It is still interesting to see if folks having more braking noise than others have spacers and/or aftermarket forged wheels.

[DCC]

I searched but couldn't find any aftermarket front pads for the G80, 82, or 87 that were not from Carbotech or iSweep

[rangerfan94]

The brake squeal on my M2 is unbearable if the windows are opened. I can barely stand it with the windows closed. The brake dust is as bad as any car I have ever owned--in fact, it's probably worse. No mods on the car at 1k miles, though I did hardwire my V1 to the overhead console. I didn't use a zip tie so it is quite reversible. I don't like driving the car around town because it is a head turner--people don't turn to look at the car, they turn to find the source of the painful squeal!

My 992 C4S brakes have been silent since day 1 and the steel brakes incredible. I don't understand how anyone here can say there is a give and take between performance stopping, noise and brake dust. Porsche has it figured out. Why can't BMW do the same?

[baron95]

Originally Posted by rangerfan94

The brake squeal on my M2 is unbearable

Do you have any spacers or aftermarket wheels, just out of curiosity?

Try the bedding procedure....or....

If you don't plan on tracking the car, switching to a more street focused pad may be indicated.

[Sethhboii]

Originally Posted by DSTR

And another video to monetize his self made situation.

Yeah I don’t understand why he didn’t get it taken care of before adding any aftermarket things. If I had that issue, I’d drive my ass up to the dealer. I guess it’s decent YouTube content. I am subbed to him but when he said that it’s been going on I literally WTF’ed out loud 😂

[VehicleVirals]

Finally got around to swapping the pads. Odd observation. Front rotors are wavy to the touch which I think caused to the pads to go bad since it's an uneven wear. I know someone mentioned these M2's sitting at the port for a long time before getting transported to dealers which caused the rotors to endure a large amount of rust which lead to them being compromised.

Anyways swapped out some used pads from a G80 M3 with 1000 miles. No more vibration but my guess is the wavy rotors will ruin those too with time. I reached out to the foreman at my local dealer to report this and will be jumping on a call with him hopefully tomorrow. Mods or not, 15 hours at the dealership and they didn't inspect something that was so obvious...because of my mods. Anyways will update you guys soon hopefully and will be filming a follow up video.

[Buketz]

Originally Posted by VehicleVirals

Finally got around to swapping the pads. Odd observation. Front rotors are wavy to the touch which I think caused to the pads to go bad since it's an uneven wear. I know someone mentioned these M2's sitting at the port for a long time before getting transported to dealers which caused the rotors to endure a large amount of rust which lead to them being compromised.

Anyways swapped out some used pads from a G80 M3 with 1000 miles. No more vibration but my guess is the wavy rotors will ruin those too with time. I reached out to the foreman at my local dealer to report this and will be jumping on a call with him hopefully tomorrow. Mods or not, 15 hours at the dealership and they didn't inspect something that was so obvious...because of my mods. Anyways will update you guys soon hopefully and will be filming a follow up video.

I hope they don’t try to say the mods caused the uneven wear

[KC87ZB]

If front rotors are wavy to the touch then there is no way new pads are the solution. Warped rotors where the amount of warpage cannot be detected by hand will cause significant vibration. Not sure what you have going on.

So, going in a different direction, these are two piece rotors right, I mean they have to be with monoblock multi-piston calipers. What are the thoughts that the bobbins are "sticky"

Common problem on motorcycles.

[fatalkarma]

Here's video of the rattling. He's got spacers and lowered. Oh, and CF struts swapped out the steel ties OEM. Long story short, the dealership would not touch it until he put EVERYTING back to stock including the engine bay struts. Seems like dealers are being really assanining.

Didn't post a follow up. I spoke to a CA and he said that cars sitting at port are rusting up and you need to do a few hard stocks to get rid of the buildup. Not sure how you do that in break in when you're supposed to go easy. That's last I heard, curious if anyone has experienced and how often it has happening with new deliveries and how it was resolved.

[VehicleVirals]

Originally Posted by fatalkarma

Here's video of the rattling. He's got spacers and lowered. Oh, and CF support ties swapped out the steel ties OEM. Long story short, the dealership would not touch it until he put EVERYTING back to stock.

Didn't post a follow up. I spoke to a CA and he said that cars sitting at port are rusting up and you need to do a few hard stocks to get rid of the buildup. Not sure how you do that in break in when you're supposed to go easy. That's last I heard, curious if anyone has experienced and how it was resolved.

https://www.youtube.com/watch?v=PYWRDNNdSp0&t=28s

Well I'm working on a follow up. Filmed most of it yesterday and will film the rest when I visit the dealership on Monday. They want to see the rotors now.