How much does it cost to replace PCCB brakes in Yellow?

[Dee]

the reason for rotor replaement on PCCB"s is due to high termperature wear vaporizing the carbon fibres inside the rotor lowering rotor density - there are 3 markings are each rotor - number's like 53/42

in my mad up example above 52 is the "factory number" and 42 is the "wear number" - I.E. if the density tool shows a value of 42 at that point on the rotor time for a new rotor

your Porsche dealer can use their carbotech tool to measure the rotor density to confirm the rotors are not worn.

I thought an illustration is welcome here.
The numbers on my front rotor.
As Dave said, these spots are used for measuring density with a carbotech tool.
It doesn't say ANYTHING about wear in general but ONLY about density.
A huge difference in density is a sign there's something wrong with the integrity of the rotor -> replacement.

The only accurate way to measure wear is to weigh them:

If the weight gets below 8170 gram it's time to replace them.
Just my €0,02.

Grtz Dee.

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