m030 is right, the PK brakes are steel brakes. As far as I heard, the PCCB isn't suitable for a SUV due to it's nature. Another reason why Porsche didn't use drilled rotors on the Cayenne...dirt would easily clog these holes and reduce braking power. I can't exclude that there will be some sort of PCCB system for the Cayenne in the next Cayenne generation but I have my doubts that it will be recommended for off-roading too.

The new PK brake is pretty impressive though, it seems Porsche put a lot of work into substantially improving the brake. I would like to see it to the be the standard brake on the Cayenne Turbo and I already had discussions with Porsche in that direction. Unfortunately I don't have much influence on their decisions, I wasn't even able to pursue them regarding the hesitation issue. It seems that they follow the principle "if all flies eat sh.t, it must be tasty" (sorry for that blunt comparison) and there is nothing I, as an individual, can do about it. Sorry.