[Crazy1323]

Originally Posted by Alan l.

For the G90 and F90 are CCB rotors bigger than the steels?

I’m not sure about the F90, but on the G90/G99 the front rotors are 10mm bigger with ceramics (16.1” for steel and 16.5” for CCB). I believe the rears rotors and calipers are the same size. The calipers are probably identical other than different seals to handle higher temperatures.

[M3PGH]

CCB are nice to have but not essential
I had multiple cars with CCB including Porsche GT cars , Audi , MB and BMW
BMW CCB are the most impressive overall
I would have predicted Porsche will be the best
I am splitting hair as they are all great

[AHall]

Originally Posted by timecurve

$30K to replace! Is this for both rotors and pads? You mentioned that CCB's can last a while, potentially a 100K miles. Is this for both rotors and pads, or pads need to be replaced more often?

$30k brake job would be crazy on a 100k mile car. I mean what would you do with the car. What would a 100k mile car be worth?

[Crazy1323]

Originally Posted by AHall

$30k brake job would be crazy on a 100k mile car. I mean what would you do with the car. What would a 100k mile car be worth?

At that point a lot of people replace ceramics with steel purely for cost. The second/third owner doesn’t want to pay those costs.

My strategy is to never own a vehicle when the ceramic brakes wear out so it is not a problem

[Skilly]

They make zero sense, unless you feel like lighting $9K on fire:

1. dust - replace pads with isweep and that problem is solved for $500 bucks
2. stopping power - very similar, unless you think youre F1 worthy. fun fact, most people running on the limit at a track day use steel rotors and swap out CCBs.
3. cool factor - uh, not sure I understand this at all. If its the gold caliper, spend $700 and have them repainted. Cool to me is having $9K extra in my pocket.
4. price - you get a pebble kick up and crack a rotor during a spicy track day...$$$

Not trolling; my other car has CCBs so very familiar with either option, and I track. That said, I'm not interested in tracking this 6,000 lb beast.

[Alan l.]

Are CCB's really dustless?

I have iSweep on my X5M and while they do dust less than OEM pads they still dust a lot where I have to wash my wheels pretty frequently. Now i'm on EBC reds and those dust a bit less than the iSweep 2000 i had but again still far from dustless.

[Crazy1323]

Originally Posted by Alan l.

Are CCB's really dustless?

I have iSweep on my X5M and while they do dust less than OEM pads they still dust a lot where I have to wash my wheels pretty frequently. Now i'm on EBC reds and those dust a bit less than the iSweep 2000 i had but again still far from dustless.

I have them on my RS6. Maybe if you didn’t wash the wheels for 1 or 2 years you might see some brake dust, but in 3 1/2 years of ownership I have never seen any.

[Skilly]

Originally Posted by Alan l.

Are CCB's really dustless?

I have iSweep on my X5M and while they do dust less than OEM pads they still dust a lot where I have to wash my wheels pretty frequently. Now i'm on EBC reds and those dust a bit less than the iSweep 2000 i had but again still far from dustless.

Im using i1500 and the dust is like CCBs - its there but you could go a couple of weeks before its a problem. i1500 is perfect for OEM cross drilled - bites better than OEM but only because the M cars have cross drilled rotors. Without that, you would want i2000.