CCB Maintenance Costs

[IB M]

Any 2015 M3 or M4 owners with CCBs who can share their experiences on maintenance costs related to CCBs? What mileage do you have? Assuming normal street driving how long should the pads and rotors last? Anyone have to replace a rotor damaged by stone chips or other unforeseen problems? I did a quick search and did not find much on real examples of owners with 20,000 + miles on their cars.

[CanAutM3]

[IB M]

Originally Posted by CanAutM3

I did search. Found a lot of threads with people saying replacement costs are high at 12k to 15k IF you have to replace them but I didn't find any real life data on when people replaced or if they are still running fine under normal use. Lots of threads on track use but I'm interested in street driving data. Many posts commented brakes would outlast car under normal street use but again no real data.

[IB M]

I'm looking at used 15 and 16 M3s and plan to purchase in next month. Just want some real life examples of daily use and whether anyone has gotten bitten in the a$$ with CCBs on their daily driver. Don't need track data as car will not see track use other than 1 or 2 HPDE outings.

[shay2nak]

I searched a few months ago also and came up with nothing.

[CanAutM3]

Originally Posted by IB M

I did search. Found a lot of threads with people saying replacement costs are high at 12k to 15k IF you have to replace them but I didn't find any real life data on when people replaced or if they are still running fine under normal use. Lots of threads on track use but I'm interested in street driving data. Many posts commented brakes would outlast car under normal street use but again no real data.

Originally Posted by shay2nak

I searched a few months ago also and came up with nothing.

There's a simple reason you're not finding anything about "CCB maintenance cost with street use". Because there aren't any .

[LDSM]

Originally Posted by CanAutM3

There's a simple reason you're not finding anything about "CCB maintenance cost with street use". Because there aren't any .

Good point.

I've always followed ccb threads out of curiosity, and they're mostly filled with speculation.
reading some of those posts it seems like they're the most fragile thing in the world, and that rocks will chip the rotors as soon as you drive down the street, but I've yet to see an actual report of someone's ccb rotors (from any maker not just Bmw) being chipped from gravel.

And I've spoken to instructors at the Bmw performance school about the reliability of the ccbs and they love them, they told me they never had any chipped rotors.

I'm Not saying it can't happen though

[IB M]

This is what I was hoping to find - that the CCBs are not costly to run on a daily driver. For those out there running CCBs daily post your current mileage here and any additional comments. Appreciate all the feedback guys.

[shay2nak]

I wasn't looking at maintenance cost, but longevity as a DD. I'd have to repeat above, since I haven't seen it, must not be any issues.

[rmedeir1]

2015 M4 with 12k miles and no issues (minor squeaks) or maintenance. Happy with my purchase and would buy again. If you got the money do it. If you don't then join the people who bitch and moan about the cost of it....I actually enjoy reading those threads

[Dweezil]

I have 17k miles on mine. Have about 20 hrs of track time on them (sorry this isn't DD only OP). The wear sensors began to show signs of significant "wear" indicating they "need replacement". I will say that the rotor surface did not show any signs of wear however and the braking performance on street as well as track remained flawless and very desirable. Given that I track this car and don't have a lot of interest in spending 10-12k on replacement I decided to convert to iron rotors. I chose the Racing Brake conversion rotors and have bought both their track and street pads. I have so far run the track pads and plan on running street soon. I will leave a review of my experience on the rotors and pads

But back to OP inquiry about DD, I have a friend with CCB that does no track days at 20k miles and there is no sign of wear on the sensors as I have found on mine.

[IB M]

Originally Posted by Dweezil

I have 17k miles on mine. Have about 20 hrs of track time on them (sorry this isn't DD only OP). The wear sensors began to show signs of significant "wear" indicating they "need replacement". I will say that the rotor surface did not show any signs of wear however and the braking performance on street as well as track remained flawless and very desirable. Given that I track this car and don't have a lot of interest in spending 10-12k on replacement I decided to convert to iron rotors. I chose the Racing Brake conversion rotors and have bought both their track and street pads. I have so far run the track pads and plan on running street soon. I will leave a review of my experience on the rotors and pads

But back to OP inquiry about DD, I have a friend with CCB that does no track days at 20k miles and there is no sign of wear on the sensors as I have found on mine.

Really appreciate the info.

Are you keeping the old CCB parts? I wonder if they bring good money sold as used.

[CanAutM3]

Originally Posted by IB M

Really appreciate the info.

Are you keeping the old CCB parts? I wonder if they bring good money sold as used.

A worn out CCB rotor has zero value

[IB M]

Originally Posted by CanAutM3

A worn out CCB rotor has zero value

Agreed.

Curious though, with wear sensors sounding but brakes still functioning and rotors looking good makes me wonder if brakes have any life left. Are wear sensors on CCB accurate?

[CanAutM3]

Originally Posted by IB M

Agreed.

Curious though, with wear sensors sounding but brakes still functioning and rotors looking good makes me wonder if brakes have any life left. Are wear sensors on CCB accurate?

You got me totally confused with that question ???

My understanding:

Wear sensors are to warn about pads needing replacement, they will sound an alarm in iDtive and are very accurate. They do NOT measure rotor life though.

There is an algorithm in the iDrive that estimates how many miles of life are remaining on the brakes based on driving style. It will sound an alarm in iDrive when it estimates the brakes need replacing. This is an estimate and is not accurate.

There are visual wear indicators on the CCB rotors. When they are half exposed, it means that the rotor likely need to be replaced. Those indicators are visual only and will not sound an alarm. The CCB rotors need to be weighed to accurately assess their life.

[Dweezil]

There are wear indicators on the rotors that help show if there are signs of wear on the rotor. The true test according to the CCB bulletin is to weight the rotors for minimum weight.

edit: Sorry, as per above, just saw this response after submitting mine

[IB M]

Originally Posted by CanAutM3

You got me totally confused with that question ???

My understanding:

Wear sensors are to warn about pads needing replacement, they will sound an alarm in iDtive and are very accurate. They do NOT measure rotor life though.

There is an algorithm in the iDrive that estimates how many miles of life are remaining on the brakes based on driving style. It will sound an alarm in iDrive when it estimates the brakes need replacing. This is an estimate and is not accurate.

There are visual wear indicators on the CCB rotors. When they are half exposed, it means that the rotor likely need to be replaced. Those indicators are visual only and will not sound an alarm. The CCB rotors need to be weighed to accurately assess their life.

So then maybe Dweezil's pads are worn but rotors still have some life left. Only way to know is to weigh them. If they have life they might be worth a few bucks down the road as used. Again appreciate all the detail here, very informative.

[evanevery]

I have less than 4000 miles on my CCB equipped M4. However, a good portion, if not most, of those miles are track miles. I've replaced the front pads once already. The car is now in the shop for a full set of pads (front and rear) and I'm having the rotors weighed. Its likely I will also need a set of front rotors.

I just dropped the car off this morning. I'm still waiting for the call with the specific weight on the rotors but I think they are at least 80% done...

So, in about a years worth of track time, two sets of front pads, one set of rear pads, and one set of front rotors...

I wonder if replacing the front rotors on an M4 with less than 4000 miles will ring some alarm somewhere in the BMW overwatch? ;-) That's gotta be some sort of a record...

[evanevery]

Just to clarify the above... At least with my track use... It looks like the pads will last about twice as long as the rotors. I need to do the second set of pads up front now and I'm pretty sure the front rotors will weigh out with marginal life left in them.

So, just because you need CCB pads, doesn't mean you need CCB rotors... Assuming my front rotors need to be replaced, I'm seeing about 2:1 life ratio (pads vs rotors).

...and I have been using the wear sensors as my indicator for the need of pads. The first time the front sensor went. This current time the rear sensor went (although the fronts look pretty close too). So 2:1 life on pads vs rotors and about 2:1 life on pads front vs rear. ..and again, most of my wear is completely track based.

Its my understanding that the CCB rotors will likely last the life of the car if your just using it for street duty. Track use is completely different as the rotors are consistently running much higher temps then what you will ever see on the street... (I have a 2013 M6 which is NOT my track car, it has CCB's, and no brake service has ever been required).

[Dweezil]

BMW standard operating procedure is to replace rotors when they replace pads. That's for iron rotors. I would assume that they would only replace pads given the fact that they should "last the life of the car under normal operating conditions" and especially that customers would be quite pissed to get a bill for the cost of new rotors every time they need pads only given that CCB is not covered under the free maintenance like the standard kit is.


Back to wear sensor/indicator issue. I was stating that the wear indicators which are the small 1 cm diameter circles on my rotors were showing wear. Brake sensors are for the pads only. I took the sensor off the pad and stuck it to control arm with wire tie right after I got the car. I should have been more clear in my description. I went through 3 sets of front pads and 2 sets of rears with 17k miles street miles which also includes around 12 track days (2-3hrs per day)

[evanevery]

This just in! Just got a call from my Service guy...

My M4 needs both pads and rotors for front AND rear. Its $9000 for front rotors and pads and $7700 for rear rotors and pads.

So $16,700 for both ends fully done. ...and I don't even have 4000 miles on the car yet! (OK... OK... so most of those miles were on the track...)

Anyway, the front left weighed in at 7356g with a min stamped weight of 7215g. I think I remember reading the min allowable weight was based on a 1000g allowable loss, that means my fronts had about 14% remaining.

The rear right weighed in at 5802g out of an allowable 5734g. If the allowable loss on the rears is 1000g like the fronts, then I have only 6.8% left on the rears. This may not be the case though as the rear rotors are a bit lighter than the fronts...

Anyway... That's the poop!

[lemetier]

Originally Posted by evanevery

This just in! Just got a call from my Service guy...

My M4 needs both pads and rotors for front AND rear. Its $9000 for front rotors and pads and $7700 for rear rotors and pads.

So $16,700 for both ends fully done. ...and I don't even have 4000 miles on the car yet! (OK... OK... so most of those miles were on the track...)

Anyway, the front left weighed in at 7356g with a min stamped weight of 7215g. I think I remember reading the min allowable weight was based on a 1000g allowable loss, that means my fronts had about 14% remaining.

The rear right weighed in at 5802g out of an allowable 5734g. If the allowable loss on the rears is 1000g like the fronts, then I have only 6.8% left on the rears. This may not be the case though as the rear rotors are a bit lighter than the fronts...

Anyway... That's the poop!

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