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Beware of premature failure of Porsche PCCB ceramic brakes

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Old Apr 21, 2014 | 09:20 PM
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Originally Posted by scatkins
it took you a while to admit it was a 997 because you probably felt it would diminish from your story in a 991 forum


The fact that it was a 997 wasn't a secret, just an oversight.

Frankly, I don't really care what you think of my story. I'm not looking for sympathy or approval from strangers on the Web, concessions from Porsche or other gains. I'm simply putting out a narrative of my bad experience with PCNA. My blog consists of facts and opinions. I clearly state which is which. You can disagree with my opinions, but not with the facts which are that:

1. Porsche promised me brakes that were 'more resistant to heat' than steel.

2. Promoted the Turbo S as the ultimate car for high performance driving.
3. I took Porsche at its word and drove it in the manner that they said it was meant to be driven.
4. The rear PCCB rotors burned out at 12,000 miles, less than a quarter of the 50,000 warranty.
5. Porsche refused to admit their liability or even acknowledge that they lied to me about the durability of their brakes. Instead they attacked me in ways not important for this discussion.
6. I used to be a great fan of Porsche, but they have succeeded in alienating me to the point that I’m spending valuable time debating with strangers on the Internet.

Take this information, and interpret it any way that you like.
 
Old Apr 21, 2014 | 09:22 PM
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Originally Posted by bbywu
The reason I ask these questions is that I have had 4 cars with PCCBs, 2 996s with gen 1 rotors, and 2 997s with gen 2 rotors. All my vehicles saw significant usage. Specific to the 997s, I found the rear pads wear much faster, and I changed my own pads, brake fluid, etc before events. I did not have the problems described above. I was curious to see if the OP was following specific steps in maintaining the ceramic rotors.
I had the local Porsche dealer inspect and service my car before every event, so maintenance wasn't the problem.
 
Old Apr 21, 2014 | 09:28 PM
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Originally Posted by jimmy348


The fact that it was a 997 wasn't a secret, just an oversight.

6. I used to be a great fan of Porsche, but they have succeeded in alienating me to the point that I’m spending valuable time debating with strangers on the Internet.

Take this information, and interpret it any way that you like.
You are entertaining me immensely, you cut and paste your "story" to every forum you can find. Then whine about spending your "valuable" time debating strangers on the internet..

mmm, probably wrong place to post if you don't like debating..

We will make sure we don't waste any more of your valuable time, so I propose we all just promise to be silent so you broadcast whatever you want without any challenge... because your time is so valuable..
 

Last edited by scatkins; Apr 21, 2014 at 09:32 PM.
Old Apr 21, 2014 | 09:31 PM
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Originally Posted by bbywu
What % of brake pad wear were on the rear pads when you started tracking? At least 50%

Did you check your rear pad wear before each event? - Yes, every time.

Were you driving with traction control/PSM/etc. on? Yes, but I wasn't aware of any traction control activations.

What did the rotors look like? Please post a photo. I don't have pictures or the rotors anymore but the round wear indicators were all dark.

What is your habit when it comes to cool down laps? Always take one.

Which pads were you using? OEM or other? All original Porsche.

All of these things are important factors in the longevity and care of PCCBs...especially % pad wear in the rear.

Sorry, I missed your questions earlier. See my answers in bold above.
 
Old Apr 21, 2014 | 09:35 PM
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Originally Posted by scatkins
You are entertaining me immensely, you cut and paste your "story" to every forum you can find. Then whine about spending your "valuable" time debating strangers on the internet..

mmm, probably wrong place to post if you don't like debating..

We will make sure we don't waste any more of your valuable time, so I propose we all just promise to be silent so you broadcast whatever you want without any challenge... because your time is so valuable..
Touche.
 
Old Apr 21, 2014 | 10:45 PM
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Originally Posted by jimmy348
Sorry, I missed your questions earlier. See my answers in bold above.
For what it's worth I think this is a valuable post and it's great to know that the CCBs are not durable and not a good choice for track driving. I had heard this from others previously too.

Not sure what Scatkins agenda is. Seems suspicious for someone to want to silence a customers feedback. Reviews help everyone. The balance of positive and negative helps provide a sense of where the reality lies.

Scatkins comes across like the bozos at Porsche who tries to sweep Nick Murray's issue under the carpet.
 
Old Apr 21, 2014 | 11:23 PM
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Originally Posted by stealth.pilot
For what it's worth I think this is a valuable post and it's great to know that the CCBs are not durable and not a good choice for track driving. I had heard this from others previously too.

Reviews help everyone. The balance of positive and negative helps provide a sense of where the reality lies.
Couldn't agree more!
 
Old Apr 21, 2014 | 11:54 PM
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Originally Posted by Fester
Couldn't agree more!
Nice C4S.

My Turbo S is GT Silver also. Love the color.
 
Old Apr 22, 2014 | 01:06 AM
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Originally Posted by stealth.pilot
For what it's worth I think this is a valuable post and it's great to know that the CCBs are not durable and not a good choice for track driving. I had heard this from others previously too.

Not sure what Scatkins agenda is. Seems suspicious for someone to want to silence a customers feedback. Reviews help everyone. The balance of positive and negative helps provide a sense of where the reality lies.

Scatkins comes across like the bozos at Porsche who tries to sweep Nick Murray's issue under the carpet.
Who's trying to sweep anything? I'm just trying to understand the issue.. And when I googled trying to educate myself on PCCB failures the only thing that showed that was relatively recent were the OP's same post repeated in a variety of different forums. Obviously an agenda, and I'm the first to admit that he has a right to that especially if he was indeed treated unfairly..

My AGENDA, is not to silence or sweep any issues under the carpet.. I'm all about publicizing things that are wrong.. And I strongly felt that way about Nicks ordeal who got the corporate customer service shaft until he embarrassed them into doing what is right..

The OP may have a legitimate gripe, but I took issue with and was frustrated with was the OP throwing a turd on the table on several different 991 board/forums ( but no 997 which would have been the most appropriate) and then not being willing to answer anyone's most basic of questions without a lot of prodding.. that is what was suspicious and I wasn't the only one who felt so..

To the OP's credit he did eventually answer the questions here that were asked of him..


You mentioned it is valuable to know that PCCB's are not durable... But that not a conclusion I'm willing to jump to at least without more qualification and a more credible and knowledgeable source..

Honestly I haven't heard enough details to even have a clue if the issue he was facing was crappy brake design, bad driving technique, a bad set of brakes, or just the nature of this kind of brake product.. I've heard comments so far in this and the rennlist threads to the effect that it could be any of the four.

But I also have learned that because of the lack of fading feedback, it is much easier for the unskilled or unknowing driver to inadvertently overheat and damage them.. they work great right up until the point they don't anymore.. especially in track applications, which apparently is why OEMS routinely deny warranty claims on them. thus the counter intuitive reputation for being better for amateur use on the street than on the track... So for a non-track user, would they really be less durable?

In any case, if wanting to understand more before jumping on the "they suck so they should be avoided" bandwagon makes me a Bozo.. then I'll squeeze my big red nose "honk... Honk"...

So I'll have to hope for an intelligent discussion by more credible folks on the subject before I make my own next buying decision..


But I agree with you, that reviews are important.. good and bad..
 

Last edited by scatkins; Apr 22, 2014 at 02:53 AM.
Old Apr 22, 2014 | 01:15 AM
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Originally Posted by jimmy348
Exactly my point! That is why I believe that PTV is what burned out the rotors, and it wasn't just from the track miles. The hilly, twisty roads I drive have 10+ turns per mile which would activate torque vectoring almost continuously. If that's not covered by warranty, then Porsche shouldn't market the 911 for such use.
A search turns up your complaint on several forums, but there are other threads about PCCB failure as well, so you are not the only one that has had an issue with them. I got 'em on my Turbo. But I don't track my car, either.

I think the sudden appearance on multiple forums at the same time with the same complaint as a first post rubbed some folks the wrong way.
 
Old Apr 22, 2014 | 01:45 AM
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I think he wanted attention for his problem and saw the right moment when all the bad publicity happened because of Nick's video.
The problems with PCCB's are known, but brakes on the 991 TTS are different. The fact that he had problems, doesn't mean all ceremic brakes are bad.

I can't help thinking this is just trolling. It's kinda strange that right after that bad publicity, someone new to all forums pops up and starts complaining on all the P-car related forums in threads for 991 while his car seems to be a 997. Sorry... i don't buy it.

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Old Apr 22, 2014 | 03:41 AM
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Originally Posted by jimmy348
Frankly, I'm not looking for sympathy. I have a wife, a dog and friends for that.

My goal is to inform and educate those who are like I was. I believed Porsche's marketing blarney about PCCB and trusted them when they said that they were 'more resistant to heat' than steel. Only after they burned out did the truth come out. Even now they won't tell prospective customers the truth about PCCB. If you drive your car hard on twisty roads, be prepared for expensive repairs.
Not even close. You have *900* track miles on a car that meets all the claims of being a rocket ship in a straight line and advertises it uses its rear brakes to aid turn-in. Your casual street driving has nothing to do with your wearing out the rear brakes. Even casual checking around would have told you that most people that do that much tracking go for steel that is cheaper to replace because that sort of wear is typical with PTV. You did not purchase a race car, let alone a track car.
 
Old Apr 22, 2014 | 06:19 AM
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Originally Posted by Suzy991
I can't help thinking this is just trolling. It's kinda strange that right after that bad publicity, someone new to all forums pops up and starts complaining.... Sorry... i don't buy it.

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Nick's post was April 15th. Mine was on April 7th. If you can read a calendar, you will know mine was earlier than Nick's. It's a coincidence. Get over it.
 
Old Apr 22, 2014 | 06:23 AM
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Originally Posted by jimmy348
Nick's post was April 15th. Mine was on April 7th. If you can read a calendar, you will know mine was earlier than Nick's. It's a coincidence. Get over it.
I was referring to my blog post, not this forum post.
 
Old Apr 22, 2014 | 06:39 AM
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Thanks for the post. It would be interesting to know if this systemic and not a one off situation.
 


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