[grinchmas]

Any thoughts on if these will be bolt-on replacements to the current M2 brakes? Finding them may be a different story, but just curious!

[AndrewC1989]

I think our current 4 piston fronts can be moved to the rear without any modifications needed, so it's just a question of if the new 6 piston calipers and rotors from the M2C will be plug and play on our cars, which I believe they should be. The M2/M3/M4 all share the same brakes and It would seem illogical from a financial standpoint for bmw to have completely redesigned them from the ground up just for the M2C. My guess is they just took the M5 rotors and calipers and modified them to fit our cars. But you never know, I guess we'll have to wait and see.

[grinchmas]

Originally Posted by andrewc89

The M2/M3/M4 all share the same brakes and It would seem illogical from a financial standpoint for bmw to have completely redesigned the brakes just for the M2C, but you never know.

Yeah that's what I figured, I know the M3/M4 CCB's can be swapped to ours so it seems logical to assume the new M2C brakes can be but who knows

[babym2]

now the question is will the M2C mirrors be bolt ons

[AndrewC1989]

Originally Posted by babym2

now the question is will the M2C mirrors be bolt ons

Probably also yes but I personally have little interest in them. They will most likely cost something outrageous like $3000. I'm getting that number based on what the e92 m3 mirrors cost when I tried to buy them for my e92 335i many years ago. If they really are that much, then it's a big no for me. I'd much rather put that money into the front brakes or some new seats.

[fullstack]

You'll have a grey set in the front and a blue set in the rear unless you get all 4 or paint two of them.

[pruettfan]

Different diameter rotors so I suspect it would take some work to get them to fit. You would be better off getting an AP Racing setup if your looking for track performance. Essex has some good videos on how the Brembos hold up to track conditions.

[KristianS]

With decent pads the std brakes should be fine I think.

Given our cars hubs/ brakes etc are carried over form the M4, I can't see why the carbon ceramic option would fit our cars and that comes with 6 piston calipers (funds allowing!).

I'm still learning all things M2, so don't shoot me down if I'm wrong!

Given BMWs previous history with brakes though, APs are the way to go for proper performance. Having said that, our cars are Brembo calipers I think so if other companies can get them to work well, why can't BMW? I personally think it's mostly down to pad choice and the std pads are a compromise for road use, where they're mainly fine.

[grinchmas]

Oh yeah, with track pads the stock brakes are great on the track in my experience.

I was just wondering if it'd be a simple swap if I could get my hands on a take-off set and save some $$ over aftermarket! Plus I think they look pretty slick

[AndrewC1989]

Originally Posted by 3rdPedalAddict

You'll have a grey set in the front and a blue set in the rear unless you get all 4 or paint two of them.

Not something I haven't done before

Originally Posted by pruettfan

Different diameter rotors so I suspect it would take some work to get them to fit. You would be better off getting an AP Racing setup if your looking for track performance. Essex has some good videos on how the Brembos hold up to track conditions.

If you buy M2C calipers, pads and rotors is should all just be plug and play and bolt on with no difficulty. M2C still has 19 inch wheels so everything should fit just fine.

Also buying just the M2C front brakes and swapping the stock fronts to the rear will be a hell of a lot cheaper than buying an aftermarket set from AP racing, brembo etc. I'm not concerned with track performance since my car is only used on the street.

[Poochie]

You'll are lucky, those 6 piston brakes will fit flush on current M2; the most you might need is new backing plates and coding.. I would jump on those, whenever it's available.

Speaking on that; roughly when would OEM replacement parts be available for the Comp.?

[AndrewC1989]

Originally Posted by Poochie

roughly when would OEM replacement parts be available for the Comp.?

I'm guessing we won't be able to find parts in the USA until the tail end of 2018 unless you buy them from overseas (which I might)

[Poochie]

Originally Posted by andrewc89

I'm guessing I won't be able to find parts until the tail end of 2018 unless I buy them from overseas (which I might)

Cool, you think you might need to re-code it? I mean it is 2 extra pistons, the booster might need to know it needs extra pressure..

[AndrewC1989]

Originally Posted by Poochie

Cool, you think you might need to re-code it? I mean it is 2 extra pistons, the booster might need to know it needs extra pressure..

Nope, no coding needed if you're using iron rotors.

"this retrofit is using the same standard OEM brake booster for iron rotors with no coding changes as the standard 4/2-piston iron setup. No need to code/replace the booster for CCB calipers as in the OEM CCB retrofit kit as the coding is to adjust the CCB booster to the friction of the CCB rotors, which is different from the friction of the iron rotors. So no no need to code/replace the standard brake booster for iron rotors for these calipers."

http://www.bimmerfest.com/forums/sho...d.php?t=884981

[MR_M2]

Are you guys upgrading for the looks?

[AndrewC1989]

Originally Posted by MR_M2

Are you guys upgrading for the looks?

Both for the looks and the decent increase in stopping power. Again, not tracking the car so form over function for me personally. I'm aware others take performance more seriously.

[eeyang92]

Originally Posted by andrewc89

Both for the looks and the decent increase in stopping power. Again, not tracking the car so form over function for me personally. I'm aware others take performance more seriously.

Just curious, but performance-wise, isn't braking power usually limited by wheel traction/ABS?

[ZPrime]

Originally Posted by eeyang92

Just curious, but performance-wise, isn't braking power usually limited by wheel traction/ABS?

Various factors, those included... but the reason to go to more pistons / bigger rotors is heat capacity or the ability to shed it. This is what helps brakes hold up to track abuse.

[Pic18]

What about brake bias? Are you sure the piston sizes in the current M2 front rotors are the same size as the rear 4 piston that is available on the M2C?

[AndrewC1989]

Originally Posted by Pic18

What about brake bias? Are you sure the piston sizes in the current M2 front rotors are the same size as the rear 4 piston that is available on the M2C?

Pretty sure, but won't be able to know for certain until the car is released/all the specs are fully out.

Originally Posted by ZPrime

Various factors, those included... but the reason to go to more pistons / bigger rotors is heat capacity or the ability to shed it. This is what helps brakes hold up to track abuse.

Yup, and you also get more even pad wear with more pistons.

Again, this is mostly a cosmetic thing for me. I think a 6/4 would look way better than a 4/2. Also gives me a reason to paint the calipers polar blue so I can show them off

[David1]

With the stock tire sizes this upgrade will do nothing for you on the street. This is just for looks. If you increase tire to road traction then you may see some improvement. Plus this brake upgrade increases unsprung weight. Now if tracking, its a different story but you will still probably need a track pad. I am wondering if BMW added much needed brake ducts, that's what I would go for and better pads on the stock set up. Plus I wonder what color the gray calipers will turn once they get really hot on track a few times.

[M-Pilot]

Originally Posted by David1

With the stock tire sizes this upgrade will do nothing for you on the street. This is just for looks. If you increase tire to road traction then you may see some improvement. Plus this brake upgrade increases unsprung weight. Now if tracking, its a different story but you will still probably need a track pad. I am wondering if BMW added much needed brake ducts, that's what I would go for and better pads on the stock set up. Plus I wonder what color the gray calipers will turn once they get really hot on track a few times.

This is probably the most annoying thing about the stock brakes on my M4. They turned into black after couple track days. However, I think BMW did it on purpose and here's why. BMW free maintenance covers for pads and rotors for MY2015 and MY2016 cars (they changed this starting with MY2017). I think they used such a bad heat-resistant paint on stock calipers so that they could easily identify tracked cars and deny free pad/rotor replacement. Now that pads/rotors are not part of the free maintenance, I bet these gray calipers won't change color. If they do, I'll be pretty pissed once again tho