M Carbon Ceramic Brake Pads service life~

GoodandEvil · 03-03-2015, 10:35 AM

Yesterday I checked the onboard computer and saw that my brake pads would need to be serviced in 100000km/90000km(aprox. 62000&56000 miles) front/rear. At my first glance it looks fine, but I'm just a little bit curious about why the rear pads wear faster than the front ones. However, after I did a little bit research about CCB on this forum, I found a picture posted by another m4 owner that showed about 250000km left for brake pad!!! I suddenly recalled that I might have seen similar number on my M5 at some point(14 frozen black with CP, CCB, MPE)! I checked my photo albums from three different iPhones and couldn't find any picture evidence about this...how could I not taken a photo for that

. I just want to know from fellow members on this forum, what is your current reading from onboard computer regarding to CCB brake pads? Could you recall the initial number when you just took delivery of the car? I

scratched my hair and couldn't remember a thing! I only have less than 10000km (6200miles) on the car, but have tracked the car twice.(at 2000km&5000km right after oil change, small track[3km], about 50~60 laps). Plan on getting some new tires this summer, but not sure how long it will take before I have to replace those pads.......

RPiM5 · 03-03-2015, 01:50 PM

Some have said that the CCB's wear out faster than the steels if you track the car quite a bit, but I don't believe that. The CCB pads and rotors at the Performance Center last about 10x longer than the steels on both the M5 and the M4, I have been told.

Either way, it could be the 50-60 laps you have done on the track that is making that number so much lower. From brand new people report 100,000 miles for rotors and 50,000 miles for pads with the CCB's usually.

E90Fleet · 03-03-2015, 01:58 PM

BMW's tech training material says

Quote:

The wear characteristics of the M Carbon ceramic brake pads are better than that of a M Compound
brake pad.
Roughly double the service life of a M compound brake pad can be expected.

WCH · 03-03-2015, 02:31 PM

I've noticed that my brake lifetime estimates have changed dramatically this winter. Even with snow tires, I have seen the traction control light come on a lot, which is probably the explanation. In particular, this would affect the rears more than the fronts.

I asked a service advisor about it and he said that the system is influenced heavily by whatever has happened recently. He suspected that as we get out of winter that the estimates will stabilize.

GoodandEvil · 03-03-2015, 04:05 PM

Quote:

Originally Posted by RPiM5

Some have said that the CCB's wear out faster than the steels if you track the car quite a bit, but I don't believe that. The CCB pads and rotors at the Performance Center last about 10x longer than the steels on both the M5 and the M4, I have been told.

Either way, it could be the 50-60 laps you have done on the track that is making that number so much lower. From brand new people report 100,000 miles for rotors and 50,000 miles for pads with the CCB's usually.

Thanks RPiM5, 100000 miles is roughly 160000KM~but it seems that we don't have service life for rotors displayed in car (Canadian spec). Based on my understanding, they will measure the life of CCB disk by either inspecting the little wear indicator on disk itself or weighting the disk!

GoodandEvil · 03-03-2015, 04:12 PM

Quote:

Originally Posted by E90Fleet

BMW's tech training material says

I also have that doc on my lap, but I don't know the service life of steel brake pads ...i guess some where around 60000km?

M6-Coupe · 03-03-2015, 04:45 PM

Quote:

Originally Posted by GoodandEvil

... but I'm just a little bit curious about why the rear pads wear faster than the front ones. ..

I do not have CCB but I have seen the rear brakes wear more than front in mine too and I think it's because of DSC interference which is more on rear side if you push the car on turns or do hard acceleration frequently ...

thebishman · 03-03-2015, 05:27 PM

Quote:

Originally Posted by M6-Coupe

I do not have CCB but I have seen the rear brakes wear more than front in mine too and I think it's because of DSC interference which is more on rear side if you push the car on turns or do hard acceleration frequently ...

This ^.

The DSC is quite intrusive even in M Mode, and to ensure stability on track the DSC is applying the rear brakes a lot in corners to minimize the chance of a spin. When you're comfortable, turn off the DSC completely, and the rear pad wear will become less than the front.
Bish

03-03-2015, 10:35 AM	#1
GoodandEvil Private 5 Rep 72 Posts Drives: 2013 M5 MCB Join Date: Sep 2013 Location: Toronto iTrader: (0)	M Carbon Ceramic Brake Pads service life~ Yesterday I checked the onboard computer and saw that my brake pads would need to be serviced in 100000km/90000km(aprox. 62000&56000 miles) front/rear. At my first glance it looks fine, but I'm just a little bit curious about why the rear pads wear faster than the front ones. However, after I did a little bit research about CCB on this forum, I found a picture posted by another m4 owner that showed about 250000km left for brake pad!!! I suddenly recalled that I might have seen similar number on my M5 at some point(14 frozen black with CP, CCB, MPE)! I checked my photo albums from three different iPhones and couldn't find any picture evidence about this...how could I not taken a photo for that. I just want to know from fellow members on this forum, what is your current reading from onboard computer regarding to CCB brake pads? Could you recall the initial number when you just took delivery of the car? Iscratched my hair and couldn't remember a thing! I only have less than 10000km (6200miles) on the car, but have tracked the car twice.(at 2000km&5000km right after oil change, small track[3km], about 50~60 laps). Plan on getting some new tires this summer, but not sure how long it will take before I have to replace those pads.......
	Appreciate 0 Tweet Quote

03-03-2015, 01:50 PM	#2
RPiM5 Major General 2870 Rep 7,885 Posts Drives: Black M5 Join Date: Apr 2012 Location: Earth 616 iTrader: (0)	Some have said that the CCB's wear out faster than the steels if you track the car quite a bit, but I don't believe that. The CCB pads and rotors at the Performance Center last about 10x longer than the steels on both the M5 and the M4, I have been told. Either way, it could be the 50-60 laps you have done on the track that is making that number so much lower. From brand new people report 100,000 miles for rotors and 50,000 miles for pads with the CCB's usually. __________________
	Appreciate 0 Quote

03-03-2015, 02:31 PM	#4
WCH Lieutenant Colonel 347 Rep 1,844 Posts Drives: '20 M8C convertible Join Date: Nov 2006 Location: Boston iTrader: (8) Garage List 2022 Porsche Cayenn ... [0.00] 2020 BMW M8C [0.00] 2017 Porsche Macan GTS [0.00]	I've noticed that my brake lifetime estimates have changed dramatically this winter. Even with snow tires, I have seen the traction control light come on a lot, which is probably the explanation. In particular, this would affect the rears more than the fronts. I asked a service advisor about it and he said that the system is influenced heavily by whatever has happened recently. He suspected that as we get out of winter that the estimates will stabilize.
	Appreciate 0 Quote