PCCB flakes/chips - ouch!
Discussion
This kind of thing is the reason I've gone for steels on my 718 GT4 and why I think PCCBs are for the well heeled only...
https://rennlist.com/forums/991-gt3-gt3rs-and-911r...
Car #1, 23k miles:
Car #2, 15k miles:
https://rennlist.com/forums/991-gt3-gt3rs-and-911r...
Car #1, 23k miles:
Car #2, 15k miles:
hunter 66 said:
But here not an issue as delivery mileage should keep them pristine
I was told by someone that the Taycan PCCBs should be replaced every 5 years due to contaminants affecting the discs. I wonder if that's what happened in the above two cases as they're both 991.1 series cars, so age as well as mileage may affect longevity.
Pah, that's nothing, I drove my 996 GT2 with the PCCB's in this state :
and the discs were all of 350mm in diameter
Joking aside, that looks like a manufacturing defect or some serious localised overheating.
Edit to add : This was the second set of PCCB discs that had failed in a total of 16,000 miles ...
and the discs were all of 350mm in diameter
Joking aside, that looks like a manufacturing defect or some serious localised overheating.
Edit to add : This was the second set of PCCB discs that had failed in a total of 16,000 miles ...
Edited by Slippydiff on Wednesday 26th February 17:09
Same thing was happening with the odd sets of BM CCB, both made by Brembo SLG, I would guess they have been heavily tracked.BM quite clearlly state , only good for 2.5k miles of heavy track use, don't know how Porsche stand on the matter.
people were changing the pads at 50 per cent worn as they put more heat into the disc, I was informed they have studs on the backing plate to hold the pad and show at five millimetre.I asked a guy to photo his pads when he put pics of his discs up, he never did.
people were changing the pads at 50 per cent worn as they put more heat into the disc, I was informed they have studs on the backing plate to hold the pad and show at five millimetre.I asked a guy to photo his pads when he put pics of his discs up, he never did.
Slippydiff said:
Pah, that's nothing, I drove my 996 GT2 with the PCCB's in this state :
and the discs were all of 350mm in diameter
Joking aside, that looks like a manufacturing defect or some serious localised overheating.
Edit to add : This was the second set of PCCB discs that had failed in a total of 16,000 miles ...
Polar silver ones were faster, in road side barriers anyhow and the discs were all of 350mm in diameter
Joking aside, that looks like a manufacturing defect or some serious localised overheating.
Edit to add : This was the second set of PCCB discs that had failed in a total of 16,000 miles ...
Edited by Slippydiff on Wednesday 26th February 17:09
Reminds me of the big reds, with yellow coloured Porsche logo’s on them instead of white, if you know what I mean.
Melvynr said:
They never put pics of the pads up, more to it than meets the eye as they say. Pads will tell a lot about how the car has been used.Look at the fourth pic down at calliper, what do you see?
Edited by unclepezza on Saturday 29th February 02:30
I have 140K miles on a set of Cayenne V8 Diesel PCCBs, still like new and faultless. Several sets of pads later (4 sets, I think) and they're like new. I have more trouble with the fluid absorbing moisture and fading every couple of years. The PCCBs are now cost positive from new, as if on steels, I'd be on at least my third set of discs.
This is a well driven daily smoker I've had from new, and I couldn't be happier with how they've performed for the last six years. They were off and weighed at just over 100K miles and 60g or so I think over minimum weight. I'll probably weigh them again at 170K or so.... unless Pork can make me a new V8D Cayenne in the meantime.
This is a well driven daily smoker I've had from new, and I couldn't be happier with how they've performed for the last six years. They were off and weighed at just over 100K miles and 60g or so I think over minimum weight. I'll probably weigh them again at 170K or so.... unless Pork can make me a new V8D Cayenne in the meantime.
catfood12 said:
I have 140K miles on a set of Cayenne V8 Diesel PCCBs, still like new and faultless. Several sets of pads later (4 sets, I think) and they're like new. I have more trouble with the fluid absorbing moisture and fading every couple of years. The PCCBs are now cost positive from new, as if on steels, I'd be on at least my third set of discs.
This is a well driven daily smoker I've had from new, and I couldn't be happier with how they've performed for the last six years. They were off and weighed at just over 100K miles and 60g or so I think over minimum weight. I'll probably weigh them again at 170K or so.... unless Pork can make me a new V8D Cayenne in the meantime.
The PCCB's are perfect for road use (there was a Mk2 996 GT3 that had them fitted) I saw the discs when the car had done 180K + road only miles, and whilst the faces were worn and somewhat "wavy" they hadn't delaminated AT ALL.This is a well driven daily smoker I've had from new, and I couldn't be happier with how they've performed for the last six years. They were off and weighed at just over 100K miles and 60g or so I think over minimum weight. I'll probably weigh them again at 170K or so.... unless Pork can make me a new V8D Cayenne in the meantime.
The Porsche sales blurb for the 996 GT2 stated the PCCB's were good for 120K miles, and on an unmodified (ie no horsepower increase) car used solely on the road. I suspect they would last that long.
Unfortunately the issues arise when they're put under duress on track and heat management becomes a problem, a shame, as the vast majority of GT/RS owners want to use the cars on track ...
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