CAlexio

Another weight element to consider will be whether most order with pccb or go with the aftermarket options for tracking. I was just talking to a guy at Laguna this weekend with a Gt4 with 105,000 miles... at least a 3rd of those on track. He had just had his pccb measured and they were still within new tolerance... almost beyond believe except he said he does cool down laps when on track....

There is some serious weight loss there... will all GT4RS come with PCCB?

lovetoturn

I believe like about 35 lbs for PCCBs. You can also get that with AP racing's Radical brake set up. It drops about 32-33 pounds. That is amazing that the PCCbs have lasted that long. I don't think that is the norm though.

Buteo

mine had about 50% life left when I traded with 12k miles on my car. Probably half of those on track. Always did a cool down lap as well.

Curious if they were measured properly, with them being taken off the car. I know a few discrepancies have been seen by measuring on the car vs off. I believe there is a thread on the topic somewhere. Either way, not the norm unless he’s barely using brakes ha!

CAlexio

i tend to agree with you.. but regardless, the guy was clearly happy with his PCCB's!

PiB993

Is his GT4 Yellow by chance?

CAlexio

No, silver with full sharkwerks upgrades and shorter gearing

Archimedes

If he has 105k miles on the car, 35k of which are track miles, and the PCCB brakes are still working fine, I’d say that’s a win, regardless of what a measurement says.

Westcoast

I was told that on the street barring any external damages that PCCB's would last nearly the life of the vehicle...

CAlexio

I believe brake pads were changed at 35,000 miles... going from memory, I think he's a Rennlister, I hope I'm not misrepresenting. but riding in the car we were chatting and seeing the brakes he said just give good cool-down laps.

Maybe the pccb issue is overblown??

Anyway... it gave me pause as I think about how I'll spec mine.. im going for lowest spec possible, zero comfort or aesthetic features like leather, and only $ spent on options which won't need to be replaced by a better track alternative. Thinking:
-PCCB? Or spend $13k and get ST refurbishable ceramics right away?
-regular seats no LWB as those don't really do the job, no HANS compatibility etc. need to be replaced with more functional ones anyway.
-no wiessach or similar farkles as need to go to 19inch track wheels
-no stereo

-actually the more I think about it... unless Porsche surprises us with some amazing performance-enhancing option.. I can't see needing to get ANY options and just going with a GT Silver car with nothing else and then building it from there. This will be just a track car I can legally drive home. Can't wait.

frankchn

I suspect it is also very dependent on everyone’s personal style. Some people might have a smoother style that causes less heat and wear, while others are harder on their brakes and tires. As I understand it, PCCB rotors don’t degrade much unless they are above a certain temperature, and if you rarely hit that temperature, they’ll last a long time.

Archimedes

I agree. I spent 20+ years on the track on motos and I was super light on my brakes compared to my buddies. I imagine there would be similar variations based upon drivers in a car.

lovetoturn

Looked it up, so FYI. OEM steel to PCCB looks like a 39 pound weight loss. Front rotor is 24.2 to 15.2 or minus 9 pounds per front corner. Rear rotor is 24 to 13.5 or minus 10.5 pounds per rear corner.

DFW01TT

Low cost?
Forget 19" wheels and tires and just track the OEM wheel and your tire of choice.
Iron calipers and their pads will always be lower cost than PCCB's, unless you will keep your track car well into the 100k mile range.
I haven't tested this in Excel yet, but I'm confident in the low cost outcome.

CAlexio

So using the widely accepted dictum that unsprung weight reduction is worth 4x sprung weight... pccb or ST rotor equivalent is very worthy expense with 160lb reduction.

Chris3963

Yes, I too am having to pause to think about how best to spec my GT4 RS. I was looking for a GT4 Clubsport but have abandoned that idea and am instead going for an RS hoping, that if spec’d properly, I can get a similar zing from it on track as I do in a Clubsport and it can be driven to the track instead of trailering. To that end, I will likely spec it as trim as practical so will stick with the LWBs and Clubsport package with roll bar as I am happy with that setup with my Simpson device and helmet. I will also go for Iron brakes. Will then look at swapping out the wheels for a set of 19s.