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Cayman gt4 replacing a set of ceramic discs

K

KOKSRACING

PCGB Member
Member
Hi all,

I am in the process of buying a cayman gt4 and going through the inevitable review of cars with and without ceramics.

I am most interested in the following and looking for any honest insight please
1. has anyone had to replace their ceramic discs whilst owning their gt4?if so why?
2. What were the rough costs? Appreciate you can go Porsche or surface transform, and other ways but just any indicative prices would be useful
3. can you swap from ceramics to steel discs retaining the brake lines and callipers? I have read various forum posts but can’t really Get a clear answer

by the way I am planning on ringing Porsche direct just to get a quote and view on the above but appreciate views vary dealer to dealer.

thanks

pete

 
I looked at a 991.1 GT3 with PCCB and wanted change it to iron discs. The cost of parts was £7,278 plus labour before any discount - see attached. This was a full installation of callipers, discs etc to keep extended warranty.

You can get iron discs and keep the PCCB callipers for far less from a number of suppliers if warranty is not a concern.

 
If you could post up the prices you get for PCCBs here that would be really helpful to others.

Anecdotally, it's approximately £10k per axle to replace PCCB discs.

 
I considered PCCBs on the GTS however the £5k price from the factory and eye watering replacement costs put me off. As an addition, I was concerned over chipping the disc when I changed to my winters.

I think I'll live with the brake dust thanks!!

Dan

 
Lots of discussion on this topic on PistonHeads at the moment, must be something in the air [:)]

 
The primary reason that I would not consider them, is that I live three hundred yards up a `dirt track` ... too much risk of a trapped stone

My `iron - steels` had a disc replaced just after delivery to original owner, due to a trapped stone

 
A single 718 GT4 PCCB Front disc is £5.0k and a Rear disc is £4.9k, both inc VAT before discount and fitting.

 
I have seen talk of claiming for a damaged disc from your insurers e.g. chips and stone scoring. Would they pay out to replace a consumable item?

Might be worth checking for those of you with, or about to buy, a car with PCCBs.

 
That's actually not as bad as I was expecting. Still eye watering though when OEM steels are around £3,500 compared to PCCB £17,000.....

 
Lots of (differing and escalating!) figures on the cost to replace, but I’ve personally yet to see a post anywhere from someone who has had to - which was the OPs first question. So I am assuming this is a pretty rare event provided they are not abused on track?

 
Wear rates are low in road only use for sure. Damage, forcing replacement, due to chips/stones etc are something else to consider although they do seem to be rare. A trip through the gravel on track would increase this risk, obviously.

I guess the question is whether you want to risk becoming one of the few people that has had to replace a disc or two? Could you stomach a £9k brake bill?

 
Agreed Dave,

Somewhat eyewatering costs to replace a full set, although I suppose it would be feasible to replace just one disc and pad set if wear was within a certain tolerance band. It would be interesting to hear Porsche’s view on that though. 🤔

I see that Design911 have Surface Transform disc and pad sets available for the GT4 at £14.3k, which sounds a bit more affordable assuming that the original calipers can be used, and I believe that they can be refurbished too and probably are a better bet for track use.

Jeff

 
£2500 a re-skim for Surface Transforms, so not cheap. A PH poster got 20k miles before needing a skim, although a heavy track user with around 7k of those on track.

 
Seems to me the probability of complete PCCB failure is about the same as a PDK gearbox going bang - but a in comparison there is a lot less internet angst about that risk, cost etc.

 
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