I.T. Guy

An answer that makes sense! Thank you. So if the wear is uneven that could mean where the sensor or visual inspection areas are measuring pad thickness maybe ok, but other areas of the pad we can't see or that is not near a sensor maybe too low = wreck the rotor.
I can dig it.

Ed99

I guess that makes a lot sense tracking vs daily street driving!!! Tracking you probably want to change up those pads at minimum at 50% and street can definitely go lower at around 30-40% depending on how harsh you drive.

E634Me

I don't know what percentage I have left, but at my last service they reported 6 mm front and rear. I have about 22,000 miles on the car.

To give an idea on how the brakes are wearing, here's a summary of the typical miles put on the car so far.

Mainly commuting in stop and go traffic 4 miles each way to work, one cross country trip, misc shorter trips up the coast, and some spirited mountain driving now and then.

I do pop the car into race mode whenever I'm having fun throttle time around some of my favorite corners in order to keep the traction control and ESP from activating the rear brakes to limit wheel spin or the rear end lightly stepping out.

figuwx

So i have probably the highest mileage w213 e63s with CCB.

130k+ miles.

the CCB rotors are still OEM. The pads have been replaced a couple of times and I will be replacing the pads on all 4 corners in the coming weeks....

I.T. Guy

How's the wear dots look?
Will they weigh the rotors to see if they are still in spec?
As I understand the CCB rotor's do not get thinner, they get lighter as the bonding agents gas off

figuwx

wear dot still good (ie still shiney)

due to mileage, this car will not see a dealer. I have an indie that does work on the car if i do not have time to turn my own wrench.

b0rderman

130k miles! Sweet. Thanks for joining in.

What was your strategy for pad replacement interval? Set mileage, measurements, intuition?

figuwx

measurements....the only thing i wont do is tires. I got a new set of PS4'S and amazingly the dealers beat out discount tire by a significant margin so got the alignment dine by them.... they did their checks and informed me of pad thickness.front still had some material left but rears... not so much.

Due to rotor cost, no way i am waiting longer.

b0rderman

Got it. I too was shocked to get my tires done at the dealer, for the second time even. For these Michelin's they are very competitive for some reason.

Where are you located? Rear pad wear leads me to believe you've got some fun roads nearby...unlike me.

taphil

I've been getting tire replacements at the dealer too over past few years. Every once in a while, they run a buy 3 get 1 free sale. For specialty tires, the total installed price going to the dealer ends up being cheaper than Tirerack or national tire store chains. And the tires are in stock rather than backordered.

Ed99

Nice to hear that someone here running over 130K plus miles on CCB is still going strong. At how many miles and mm did you change all 4 pads? And how much were just the pads to replace?

SilverE5588

Great to see the mileage. Love when they get driven. How's it been otherwise ? Normal maint./wear & tear items ?

You may have one of the highest mile 213s out there. If not it.

figuwx

I am in MN. I actually just pucked the car up within the last two weeks.

That is exactly what happened. Buy 3, get 1 for $1. Had them do a 4 wheel alignment while there.

I buy online. Locally the dealership quoted 1.5k for the pads, did not bother asking about labor.

Engine is strong, good gas mileage considering. The gps antenna was diagnosed as open by Xentry so that plus pads are coming in thursday. The driver side rear view mirror 360 camera needs to be replaced.

Paint is still matte.new ps4s. Vacuumed and detailed....now just need. Let see if i can get it to 200k.

quresh

Bringing back the thread once more, thanks for all the knowledge shared so far.

My CCBs have ~23k miles on them now, I purchased the car with 15k miles earlier this year. Majority highway driving and car has never seen the track. Brakes still feel like strong but I want to change pads at the 40% mark to be on the safe side as recommended by many on here.

Was wondering what method folks use to estimate their pad wear on these cars? Is there an easy way to reliably eyeball it?

Also, my CCBs seem to squeal occasionally in city driving but only on one side (front-left). Is that a sign that the pads are going since the sound isn't uniform?

figuwx

No eye ball..

The pads measure 11mm thickness for the fronts. The rears I think they were 6.x mm new (i thought i had written down the measurements).

The rears are actively used by the hill hold, park, diff load spliting (part of 4Matic+) and lane assist features.

HiSpeedLoDrag

Could someone give me some input on these carbon ceramics? The car is a 2015 and it has 49,400 miles. Thanks in advance!

Faast

Those circular spots are wear indicators and need to be smooth
One actually needs to weigh these ceramic rotors to compare with the stock weights to see how much life is left behind

täglich

@HiSpeedLoDrag there should be a minimum weight written on the part. Be advised, these rotors are expensive to replace:

https://www.fcpeuro.com/products/mer...des-2314230712

https://www.fcpeuro.com/products/mer...des-2314230612

https://www.fcpeuro.com/products/mer...des-2314211512

https://www.fcpeuro.com/products/mer...des-2314211612

I.T. Guy

Look GREAT!
When darker spots start showing they are starting to show wear, and will feel a little pitted.
The more dark/pitted they are the more through their life rotors are.
The circles in your pics look "new". They will last a long time if you are already at 50k with almost "no wear" indicated.

Yes, the official only way to tell "for real" is to weigh the rotors the weight they should be is written on each CCB rotor. The reason for the weighing is unlike traditional iron rotors that wear thinner, CCB's gass off bonding agents and get lighter/less dense as they wear until one day they are no longer structurally sound, even though they look smooth and good. (Except the wear dots which will be all black and pitted).