Ceramic brakes

[NickBB]

I recently bought a 997tt with 20k miles. For what i want out of a car it's perfect, and the more i've driven it the more i love it.

The ceramic brakes are amazing. Aside from the (lack of) weight, rotational mass etc etc, the ability to lose speed is astonishing for a road car.

Anyway, my question is should they make a squeeling noise?? I had a 996tt on which i put gt3 brakes, and they made a lot of noise (and continued to do so). The pccb are different in that after ive braked lightly a couple of times, the noise usually goes away.

A mate of mine has pccb on his 996tt S, and they have never made any noise so I spoke to the opc i bought the car from and the technician says its normal for them to make some noise. Others i've spoken to all say their pccb make squeeling noises, some are random, others when hot etc etc. I will be taking it to an opc just for peace of mind (it could be the anti-squeel plates??)

Have done a search on here and couldn;t find much out, hence my post.

cheers
N

[Geneve]

My experience of PCCBs (30k mls in 997 GT3, 997 Turbo S, plus various demo/Silverstone cars) has been no noise - in fact, quieter than steel brakes.

However, these are the later generation PCCBs, so there may be some differences in the pads and disc construction.

[NickBB]

thank you, it doesnt happen that often, but will get them checked by the opc for peace of mind. The actual noise doesnt bother me, if fact it helps to warn people i'm coming!

[911Thrasher]

Running them on my 997.1RS and they do squeal every once in a while.

Mine actually tend to squeal when the pads are on the low...strange, or good indication of when to chnage them

But in general i think it's normal as material much stronger than steel discs.

[Martian O]

My 997.1 Turbo (18k miles) has PCCB's and they squeal occasionally, I reckon about 10% of the time.

[jsb]

Mine have squealed but only very occasionally. Worst ever was driving through London, lots of stop start and heat soak on a warm day!

[Gibbo205]

Mine rarely squeal, just odd squeak, I'd not worry about it. Though track days seem to eat front pads, anyone else found this?

[911Thrasher]

Gibbo205 said:

Mine rarely squeal, just odd squeak, I'd not worry about it. Though track days seem to eat front pads, anyone else found this?

+1 on my 3rd set of pads at 24kmiles (actually getting the 3rd one fitted as I write this)

Seems that they last more or less 10/12kmiles per set.

Discs however are as new.

[911Thrasher]

Gibbo205 said:

Mine rarely squeal, just odd squeak, I'd not worry about it. Though track days seem to eat front pads, anyone else found this?

+1 on my 3rd set of pads at 24kmiles (actually getting the 3rd one fitted as I write this)

Seems that they last more or less 10/12kmiles per set.

Discs however are as new.

[s_mcneil]

911Thrasher said:

+1 on my 3rd set of pads at 24kmiles (actually getting the 3rd one fitted as I write this)

Seems that they last more or less 10/12kmiles per set.

Discs however are as new.

Are you running the standard PCCB pad (black) or the motorsport (green) version? I've got to replace my fronts and wondering which way to go...

[911Thrasher]

s_mcneil said:

Are you running the standard PCCB pad (black) or the motorsport (green) version? I've got to replace my fronts and wondering which way to go...

Hmmm good question - my mechanic just orders from Porsche the bits by quoting the chassis number and stating it's an RS. I've texted him to ask, will let you know as well as price.

[Gibbo205]

911Thrasher said:

+1 on my 3rd set of pads at 24kmiles (actually getting the 3rd one fitted as I write this)

Seems that they last more or less 10/12kmiles per set.

Discs however are as new.

My car is on 36k miles. First set of pads lasted 33k miles plus one track day. They were changed with about 40% left on them as I've heard its advisable to change pads early on ceramics?

Now 3000 miles later and two track days, the new set seems to be circa 50% worn, but gonna get a second oppinion in case I am over reacting but it does seem trackdays really eat the front pads.

But it could also be my driving style on track wearing them, as I was braking gently and braking early as I thought this would be easier on the car, but its been suggested the pads will last longer by braking harder and for less time. So brake later and much harder instead of braking early and more gently.

My disc on the other hand seem fine, apart from some minor surface cosmetic defects I've been told this is normal and the disc themselves are fine. Though I do at least 2-3 warmup and 1-2 full cool down laps to safeguard the discs.

The rears however look brand new and the pads are still the original set and look like their is a good 60-70% left.

[LuckyP]

7GT3.2 16,000 miles. 3rd set of pads. Lots of track work. New pads don't make a sound in my experience. After a track day they squeal and grind! (and the G/F gives me that knowing, "how much?" look). I change religiously at 50% worn, but the squeal doesn't bother me (unless she's in the car!!).

But in my limited experience, I've never had a new set(read non tracked), squeal.

HTH

Pete

[Gibbo205]

911Thrasher said:

Hmmm good question - my mechanic just orders from Porsche the bits by quoting the chassis number and stating it's an RS. I've texted him to ask, will let you know as well as price.

I can't remember the colour of my pads, Porsche ordered them up for me, I can check my invoice if that helps?

What I did notice is they were Pagid pads in a Porsche box.

I use they are awsome, never fade, incredible stopping power, just don't seem to last long when tracking them.

[911Thrasher]

Gibbo205 said:

I can't remember the colour of my pads, Porsche ordered them up for me, I can check my invoice if that helps?

What I did notice is they were Pagid pads in a Porsche box.

I use they are awsome, never fade, incredible stopping power, just don't seem to last long when tracking them.

+1 Pagid in a Porsche box.

I change at 60% use as well religiously...last set did 10kmiles including Spa x2, Bedford x2 and Snetterton x1

[Gibbo205]

911Thrasher said:

+1 Pagid in a Porsche box.

I change at 60% use as well religiously...last set did 10kmiles including Spa x2, Bedford x2 and Snetterton x1

I never measured how much meat they have new, if I take a picture and post it here will you have an idea of how much is left?

I do find it hard to believe that after just two track days they seem quite worn, but like I say my early and gentle braking, could that be reason for more extreme wear? I just can't bring myself to stomping on them so hard due to mechanical sympathy plus the fact my internal organs will probably come out, LOL.

[LuckyP]

Do you boys find that they wear evenly or do they wear more on the leading edge?....

.....s'pose you have have to change or measure your own to find out?

[LuckyP]

They come new with 10mm:



I change when one edge gets to 4mm (other end seems to always be between 5 and 6mm):

[GT3ZZZ]

I'm running a 997.2 GT3 and a 997 Turbo S, both with CCB's. Had a bit of squealing on the 3 cured by some hard braking and not recurred. Nothing on the TTS.

[Gibbo205]

LuckyP said:

They come new with 10mm:



I change when one edge gets to 4mm (other end seems to always be between 5 and 6mm):

[pic]http://i46.photobucket.com/albums/f105/luckyp103/oldfrontpad.jpg[pic/]

Cheers, though that looks small, maybe pic though.

Shall try to measure them tomorrow, any tips on measuring with wheels on car?

When you say thickness differs from one end to other, I was gonna measure from above, as from below be quite hard with no ramp or jacking car up.