You state:”my brakes developed an unpleasant noise and vibration. An appointment was made to Porsche Reading to rectify said problem, although my fears were cemented by then – it was obvious the steel brakes were simply not up to the task”.

Could you tell us what exactly was the problem? Warped discs or something else?

The problem has started with the pads. I have raced cup cars with orginal steel discs no problems.

Orginial pads don t accept very high track temps. And if it does you get cracked pads and you get burn deposits on you discs. When you brake over the deposits you get vibration which will get worse worse if you stay out on track.

When you swap to pagid yellows rs29 or black rs15 or PFC 97 or 01 you would have no problems whatsoever with the brake system.

Why does porsche don t use these pads as OE. Because they make more noise and cold braking is worse.

Street pads brake better when cold. But at very high trackday use the temp get outside there working temps and leave deposits on discs.

Thanks for the other notes

The problem with pccb is that they dont look much different to the discs i had on my CGT,they did not take much circuit use,also porsche said at the launch the pccb last no longer than the steels on track.

I think the gen 2 gt3 is faster than the gen 1 and also heavier once specified up,so this may put extra load on the brakes,yes they are now 380 mm,but the pads new look very thin,which could also contribute to the state of your pads.
I will see if i can get some accurate answers at the rs launch on the 30th.
The info on extra allocation of rs was from the person i have ordered my rs from.Which seems to be correct as a few other people have now got there allocation and some opc have now got 2 cars.
Hope you find a rs and enjoy it!

Specialist Cars of Malton said they had a couple of RS’s coming in. Not sure if they were sold.

http://www.specialistcarsltd.co.uk/

Don’t let their site put you off as they are a bunch of good guys. Speak to Mark.

Rich

PS

I thought you were never going to buy a GT3 again and would always opt for the RS after all the stick Glenn Mc gave you. ;)

My advice would be to stick to PCCB’s on the RS.

p.s. how did you hear about the allocation increase?

For Porsche to claim that I’d abused the brakes is an absolute cop out and I will not be recommending steel brakes to anybody who’s going to track the car.

Had a chat with a couple of motorsport engineers and they agreed the brake problem could be related to your upgrade to Castrol SRF brake fluid. The benefits of running with a motorsport brake fluid are obvious: the higher dry boiling point (above 300’C) certainly reduces the chance of the brake pedal unexpectedly going to the floor! It should provide that great feeling of confidence from a stiffer brake pedal and the ability to run for extended track sessions.

However, changing from the standard brake fluid to Castrol SRF does also have some potential risks. By design, Castrol SRF allows the brake fluid to operate at a significantly higher temperature during track driving, meaning that the braking system will soak up more heat – so the brake callipers, lines, seals and discs are also pushed to operate at higher temperatures than they may have been designed. Hence, the use of a motorsport brake fluid such as Castrol SRF potentially increases the brake cooling requirement.

There’s also the possibility that the issue could have been compounded by some “green fade” overheating if the brake pads hadn’t been cured, but I’m sure you would have followed an appropriate bedding in process.

As an aside, apparently there’s a 997 GT2 with PCCB that melted the brake callipers on a track day after changing to Castrol SRF. There have also been some suggestions that Castrol SRF can corrode seals in the master cylinder. It’s a real shame that the suppliers of expensive motorsport upgrades don’t always provide appropriate disclosure on the potential risks…

All the best with the new RS – it must be a real hoot!