Nodrip

I was not necessarily referring about high temperatures, as the same thing happen when cold. My previous car was a GTR and as soon I touched the pedal the brakes were biting a lot compare to the GT3. Like the pedal was too sensible.

Now I remember that one of the feedback from the GTR community, on your brake calipers, is that they add more "brake modulation". This is probably what I am referring to!

EDIT : I have found the post that I was referring from the beginning : https://rennlist.com/forums/gt4/8972...l#post12653013

meaker

Oddly I feel like I use more effort ( and much more at higher speeds) with pccb on my 991 gt3 over iron on my 997tt.

RacingBrake

I was just citing how temperature change can affect the rotor (coefficient of friction) that are made from two different materials.

• CCM rotor - Stay as solid and hard as is, regardless (literally) of temperature change.
  
• Iron rotor - Soft (comparing to CCM) at room temperature, and gets even "softer" as the temperature is elevated.

So in comparison, it's not difficult to understand why it's harder to get friction (initial bite and consequent braking) out of a CCM rotor vs. an iron rotor unless a more "dedicated" stronger pad for CCM rotor is used.

A dedicated CCM track pad is harder to modulate in nature than a standard iron pad, thus a caliper with better modulation ability can make up the deficiency of a CCM dedicated pad.

westwest888

I've done a lot of research in this area. Regarding the Pagid RSC series of pads, it's great that they make these for a few caliper shapes like Porsche and Ferrari. However, ceramic discs need to be bedded to the pad at the factory on a brake dynamometer. You literally can't get them hot enough when they're on the car to do this properly, racetrack or not. I would use Porsche OEM ceramic pads or RSC1 at most, knowing they won't be perfectly matched and something may be compromised. I'd just get used to buying new OEM pads every 4-6 track days.

In the aftermarket, you can step it up from CCB but it's going to cost you. CCM-R is the best ceramic disc money can buy and it's been tested in the Ferrari Challenge motorsports series. It's about $16k per axle, fully discounted best and final price. They're actually meant to stand up to track abuse and probably would last the rest of the useful life of the car. It's estimated at 4x longer than OEM CCB.

For the person that wants moderately priced wear items on a track day, I'd go with a 718 Cayman base in white with the 350mm all around CCB as the only option. When they wear out in the 3rd or 4th track season, you can replace with Brembo Type 3 all around, or investigate that CCM-R option.

aalencar

So you feel you are not getting much more from Pagids over OEM? Was planning on using RSC1 for track then swapping to the OEM for the little street use I get on the car. Nuts?

Hoopumpers

I've done 8 solid days at thermal, chuckwalla, ACS and COTA with CCB stock setup. Measured pad width and 1/2-1 mm taper with only 3mm burned (started 12mm, finished ~9mm). Based on Internet hearsay, planning to replace at 6mm. So I would at least double your estimate.

The stock CCB setup with stock pads is rather astonishing. Very impressed.

signes

^ Have you had the rotors measured (density) at the dealer?

Jason @ Paragon Products

Keep in mind that Pagid makes the OE PCCB pad as well and they are installed in an un-bedded condition. RSC1 is less expensive than then OE pad, is compatible with the stock pad layer and is no different to bed in than the OE pad.

http://www.paragon-products.com/Pagi...4927-pagid.htm

http://www.paragon-products.com/Pagi...id%20u4925.htm

bigkraig

I've got some new datapoitns. I havent checked how many miles it has been but its probably been a few thousand plus about 300 track+autocross miles

LF 1 51/38/45.9
LF 2 59/44/54.3
LF 3 59/44/53.9

RF 1 63/45/58.5
RF 2 65/48/60.2
RF 3 57/42/57.6 ?!?

LR 1 62/47/56.5
LR 2 60/48/55.1
LR 3 60/46/55.0

RR 1 59/45/52.2
RR 2 59/45/56.1
RR 3 62/47/59.6

meaker

Can you explain how I should read these? Is 1 the first reading, or is 1 the spot of the rotor and you read across?

bigkraig

first is what it starts at (i don't know if anyone has verified they actually start here)
second is the maximum wear that they allow
third is current

meaker

Thanks.

991PTSRS

Is there a read somewhere on the "suggested" bedding in procedure for the new PCCB's on the GT3 and RS?

Karl911

I had my front PCCB rotors refurbished at Sicom for $5K!

Nodrip

Damn you can buy 3 sets of steel rotors at this price!
But still better than new PCCB from Porsche at $10k!