LOL. PCCB brake questions always draw a crowd.
For original poster:
1. Check to find out if this is first gen or second gen. PCCB. If it is first, I wouldn't touch it with a 10 foot pole. There was reliability problem. I vaguely recall a transition period around 2004 or 2005 (don't know exactly when and which car) where some cars got PCCB gen II. Someone here should know.
2. If you track the car, unless you are ready to spend $$$, I would stay away from PCCB brake, regardless of first or second gen.
3. If you are going to use for the street, and this is second gen. PCCB, then most definitely yes. PCCB II has AFAIK spotless record.
4. Check for crack with a microscope.
I've read that cracks running from hole to hole is an absolute no-no.
Cons of PCCB:
1. No improvement in braking distance. At least for the first few tries. Should improve with repeated brakings because of less fade but I have never seen numbers to prove such.
2. If you are to track, and need "better" brake than the already great Big Red, then the big guns from Brembo is the way to go. Or so I've been told.
3. Despite of what people claim, yes, in the rain, in my experience the first application could feel "funny"; it doesn't seem to bite right away -- a split second delay. This is purely a subjective sensation. Whether this results in longer braking distance, I don't know. I've never seen numbers to prove one way or another when the brake is wet. ABS does kick in in these situations -- if you press real hard in the rain -- so possibly braking distance is same, at least for panic brakes.
4. $$$$$ to replace. But... Porsche claims some big number (100,000 miles?) until replacement with normal usage, and so far this *seems* to be true.
Advantages of PCCB:
I once had a long discussion in a PCCB thread on rennlist's GT3 forum. The person who answered my questions tests brake for living, he is NOT a proponent of PCCB, stating repeatedly something to the effect that after-market big iron like Brembo is a better solution. In the end, I believe he agreed to 2 advantages of PCCB vs. Big Red:
1. Reduced unsprung weight, 35 lbs. 35 lbs. is a significant amount. This provides advantages in handling and acceleration. While it's debatable whether a particular driver could feel the difference, the known advantages of reduced unsprung weight is irrefutable
. This is for MMD, to answer the question of "what does PCCB do on public road driving"; for such a rennteam veteran, I am surprised you haven't heard of this.
2. The subjective feel of the initial bite.
Other advantages of PCCB:
3. Little known fact: PCCB actually has BIGGER front (rear too? don't have manual w/ me now) rotor than big red. You are paying for both PCCB AND bigger brake.
4. Less fade with repeated braking.
5. Rotor lasts longer in street use. PCCB's reliability record has been impeccable, AFAIK, for the streets.
6. Pretty to some.
7. No brake dust.
I use this rule whenever I have questions about a particular option or mod or which car to upgrade to: Of the people who have owned both, or who have LONG TERM experience with both, does anyone ever revert back? Applying this to PCCB, and for example regular 997 vs. Turbo, and you will find that the answer is overwhelmingly in favor of PCCB (EXCEPT for tracking) and the Turbo.