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BMW M2 Forum > BMW M2 CS Model > Carbon ceramic brakes: why (not) getting the 2NK option (M-CCB) ?

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      08-21-2020, 04:01 PM   #45
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Quote:
Originally Posted by Poochie View Post
Yea, I like red calipers also but carbon ceramic brakes on a M2 is such a privilege and aesthetically, looks so superior and dominant.

Plus, you probably wouldn't have to do a brake change, if it's only street driver, for a good 100k miles..

Either is a win anyways but if I'm springing for an M2 CS, I'm going for the gold..
there are those who dream, those who admire, finally those who track /// M2 CS enjoy!
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      08-24-2020, 10:25 AM   #46
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I'd get them just for the cleaner wheels

Unsprung weight savings is substantial and noticeable evidenced by my Porsche experience.

Track use and nannies not so good for ceramics.
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      08-24-2020, 10:46 AM   #47
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Quote:
Originally Posted by medphysdave View Post
I suspect the technology improvements with time are similar for Porsche and BMW. The latest gen of PCCB discs do seem to fare better than the last gen. Racing brake is also an option for aftermarket CCM rotors made by surface transforms. I believe it's still about 12k for four corners. A set of these, in my opinion, are nice because of the very reasonable refurbishment cost.

If hell bent on CCB rotors, then the factory option is highly subsidized by BMW.

There's likely not much stopping someone from getting some CCM rotors for the front and getting some two piece rotors for the rears and bias with pad selection. Gets the weight off the nose for about 5k.
Food for thought; I believe Porsche PCCB rotors may be swapped out for iron ones if one chose not to pay the high cost of CCB replacement. Hopefully, that would be the case with BMW.

I agree CCBs will have very little if not zero residual. It's not a big deal when trading or running the used car sale through a dealer to get the car certified for the next buyer. It's buying/selling one post warranty without BMW certification/extended warranty.

All said, I wouldn't buy another GT3 or RS without them. The CS's price point does make you think hard about it however; 10-11% of the car's value.
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      08-24-2020, 11:22 AM   #48
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Some interesting info in here. Also learned that the CS front rotors are the same size as the 488GTB.

https://www.ferrarichat.com/forum/th...or-488.592366/
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      09-03-2020, 03:22 PM   #49
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In Achilles review just posted today he has some negative things to say about the CCB's at the 6:25 mark:

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      09-03-2020, 03:23 PM   #50
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Quote:
Originally Posted by GimmeanM View Post
In Achilles review just posted today he has some negative things to say about the CCB's at the 6:25 mark:

Need some cooling ducts for sure. +700C is a no-no for CCB
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      09-11-2020, 05:17 PM   #51
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I’ve never had a bmw with ceramics. I had them on all the Porsche’s to date except my 2019 gts. I cheap’d out at the last minute because it was 10k and I’ve regretted it everyday.

Are the bmw ceramics no good?
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      09-11-2020, 06:01 PM   #52
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They are great, I believe they are equivalent to current Porsche PCCB
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      09-11-2020, 08:09 PM   #53
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Quote:
Originally Posted by jlee View Post
I’ve never had a bmw with ceramics. I had them on all the Porsche’s to date except my 2019 gts. I cheap’d out at the last minute because it was 10k and I’ve regretted it everyday.

Are the bmw ceramics no good?
It's just the nature of the technology. They are an expensive consumable. If kept under 700C they will last a very long time. If you can get 100k miles or more out of them, then they are likely worth it from a purely financial perspective. Plus little brake dust, a little lighter, and they look great. If you don't put that many miles on the car, then you have to decide what the other bonuses are worth to you. Just remember that if you replace them with ceramic rotors after that many miles you've likely vested $20k US in brakes. Maybe $5k for steel, so is $15k worth it.

If you want them, get them. Worst case is you regret it. Spent 8k on the option and swap to steel.
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      09-11-2020, 11:40 PM   #54
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Quote:
Originally Posted by medphysdave View Post
If you want them, get them. Worst case is you regret it. Spent 8k on the option and swap to steel.
I like red. Red is nice. Red and blue is nice. Red and black is nice. I like Red.

However. The red will seriously clash with the US spec orange things implanted into the front guards. So this would require deletion of those "things" or the gold brakes.
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      09-12-2020, 03:34 PM   #55
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It would be a lot cheaper to lose 10 pounds than buy these brakes.
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      09-12-2020, 05:42 PM   #56
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Quote:
Originally Posted by Jimjamz View Post
It would be a lot cheaper to lose 10 pounds than buy these brakes.
I've had these number in a spreadsheet for a while.
  • OEM 2NH Brakes (Grey or Red Calipers)
  • Front Disk: 30.58lbs
  • Rear Disk: 24.91lbs
  • Carbon Ceramic Retrofit ($10,895 lowest found price)
  • Front Disk: 16.16lbs
  • Rear Disk: 12.61lbs

May as well consider lighter wheels while you're at it. The mass is going to be concentrated further from the center of rotation so it's worth more.
  • OEM M2C 788M
  • Front: 24.7lbs
  • Rear: 26.24lbs
  • HRE R101LW ($8,640 lowest found price)
  • Front: 16.6lbs
  • Rear: 17.2lbs

Brake Savings: 53.44lbs @ $204/lb
Wheel Savings: 34.28lbs @ $252/lb

$19,535 to cut 87.72lbs. However, that's rotating and unsprung mass. It's going to feel like much more than 90lbs and improve everything from ride quality to acceleration to gas mileage. You also won't ever have to worry about brake dust or (if you're street driven) brake maintenance.
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      09-13-2020, 04:16 PM   #57
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Quote:
Originally Posted by medphysdave View Post
If you want them, get them. Worst case is you regret it. Spent 8k on the option and swap to steel.
Great thread, yet I'm still trying to decide. I have two questions:

1. With CCBs, are regular pads and steel rotors plug and play compatible with the rest of the CCB braking system? I can think of two reasons why I'd want to potentially do this:

a. For track use (then swap back to the CCB rotors and pads for street)
b. Once I've driven 100,000 miles on the street (or whatever it ends up being) and I don't want to re-up for another super expensive set of CCB replacement pads and rotors, just switch to steel at that point.

2. I've done pads and steel rotors before and really enjoy doing my own brake services. Are CCBs the same, or is it not a DIY job?
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      09-13-2020, 05:12 PM   #58
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Yes swapping CCB for steel is plug and play, technically you could also code your DSC to have the different operating between the two systems.
Yes you can DIY CCB pad replacement just be extra careful around the rotors.
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      09-13-2020, 06:30 PM   #59
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Quote:
Originally Posted by Acetech View Post
Yes swapping CCB for steel is plug and play, technically you could also code your DSC to have the different operating between the two systems.
Yes you can DIY CCB pad replacement just be extra careful around the rotors.
I've read that most risk is from the wheels going on and off, but there is a tool that can make this more safe. I think itd just a rod that holds the wheel after the lug nuts are off so you can pull/push the wheel on or off at the right height to not impact the disc.
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      09-13-2020, 06:43 PM   #60
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Quote:
Originally Posted by Acetech View Post
Yes swapping CCB for steel is plug and play, technically you could also code your DSC to have the different operating between the two systems.
Yes you can DIY CCB pad replacement just be extra careful around the rotors.
Quote:
Originally Posted by medphysdave View Post
I've read that most risk is from the wheels going on and off, but there is a tool that can make this more safe. I think itd just a rod that holds the wheel after the lug nuts are off so you can pull/push the wheel on or off at the right height to not impact the disc.
Super helpful, thank you! And I already have that helpful tool. I think the only think holding me back from ordering the CCBs at this point is that if I decided to sell the M2 CS early on for whatever reason, I don't think I'd get the full cost back for the CCBs. For the (a) long-term owner who (b) isn't planning on tracking their car (or has a set of pads and discs to swap in for track days) and (c) can justify the high cost (lighter weight, almost no brake dust, "highest expression" of what the M2 CS is supposed to be, etc.), CCBs seem to be the way to go. It's the long-term owner part I'm not sure about at this point -- otherwise I'd have made my decision.
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      09-13-2020, 08:02 PM   #61
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As an FYI you can always add surface transforms discs later on if you want to try them out. About 11K for the discs with significantly reduced refurbishment cost. They can be had through racing brake. An AP racing kit can be had for less, saves almost as much weight, better system, low consumable cost.

I understand it's not factory and will take away some luster, but there will likely be more buyer's for the steal equipped cars than ccb equipped.
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      09-13-2020, 08:11 PM   #62
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I'm a M2CS buyer in 2022 and I'll be looking for CCBs so selfishly if you could all please order them that would be appreciated.
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      09-13-2020, 10:36 PM   #63
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Quote:
Originally Posted by IB M View Post
I'm a M2CS buyer in 2022 and I'll be looking for CCBs so selfishly if you could all please order them that would be appreciated.
You like them but just not the price 😂
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      09-14-2020, 02:02 PM   #64
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What's the cost to add the CCB option in US car? My SA is saying they don't have pricing yet but he is assuming $8.5k
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      09-14-2020, 02:08 PM   #65
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Originally Posted by rusty racer View Post
What's the cost to add the CCB option in US car? My SA is saying they don't have pricing yet but he is assuming $8.5k
That is what I was told based upon the M4CS pricing.
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      09-14-2020, 04:45 PM   #66
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If you track, use steel. If you will do daily, then CCB.
Now i have it in my f10 m5 and will add it again. Will do occasional driving events.
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