I recently converted my PCCB equipped Boxster (aka Cayman Cabriolet) to Girodiscs.
First of all, BIG thanks to Craig at Rennstore!!!
I have had brake problems from day one with the PCCBs. On the street they are fine and on the track they aren't. Somehow too much heat gets into the calipers and boils the fluid causing no to low brake pedal. It may be my braking technique, although not a single instructor has said I was doing it incorrectly. After a few code brown moments, however, one loses one's trust in the car slowing at the last moment and one then leaves enough time to get in an extra pump or two to get a brake pedal back.
So, is that PCCB or not? I don't know.
What I do know is that, even from Suncoast, a replacement set of PCCB rotors costs $16,500. So if you wear one or more out, pick up a pebble and crack one or whatever, that's just too worrisome for me.
Craig let me know that Girodisc now has a set of rotors that are the exact replacement for Cayman/Boxster PCCBs. I won't state the price here, you need to contact him for that in case he has a sale on or something, but let's just say that you can buy all four for less than half the price of a single PCCB rotor.
And these are very high quality units. Heavier than PCCBs? Yes. The rears not as much as I would have thought. The fronts are pretty heavy -- remember, they are 350mm diameter and 34mm thick.
Replacement was completely straightforward so there isn't any need to go into all those details here. A bit of searching this site will reveal how to go about it if you don't already know.
How do they feel? Great so far. I am starting with a new set of street pads. I think I can feel the extra weight in the front, but just barely. And I know that feeling will go away as I get used to them. Braking effort is virtually indistinguishable from the PCCBs.
In a couple of weeks I will change the pads to RS29s for the LSRPCA DE on May 1 and 2. At that time I will clean the rotors of the street pad material and properly bed in the new ones. I know a DPS officer who will (he says) keep me out of the pokey as I bed in the 29s.
Oh, and I will run Ti shims behind the 29s and see if we can keep the heat into the rotors where it belongs. Maybe I can have real brakes this time!
I will report back with those results after the DE.
Thanks again to Craig at Rennstore. He is a delight to work with and a great resource.
I hope you find this of interest.