View Poll Results: PCCB or Steel Brakes on your 991 GT3?
PCCBs, the car is for street driving only.
150
22.76%
PCCBs, and I'll track it that way too.
148
22.46%
PCCB, but buying steel rotors or system for track.
44
6.68%
Steel brakes, it's the way I roll.
317
48.10%
Voters: 659. You may not vote on this poll
PCCB or Steel on your 991 GT3?
07-11-2014, 11:56 AM
#106
Race Director
I got steel rather than the PCCBs and it was a combo of red caliper color, proven performance, cost, trade-off on other options, ect ect.. One thing that did deter me is that it has been conveyed that it does take the PCCBs a little time to warm up. That did bother me a little bit because I live in the Midwest and do not track my car so I had a little concern.
It that valid info??
It that valid info??
07-11-2014, 12:18 PM
#107
Nordschleife Master
I got steel rather than the PCCBs and it was a combo of red caliper color, proven performance, cost, trade-off on other options, ect ect.. One thing that did deter me is that it has been conveyed that it does take the PCCBs a little time to warm up. That did bother me a little bit because I live in the Midwest and do not track my car so I had a little concern.
It that valid info??
It that valid info??
07-11-2014, 12:30 PM
#108
Race Director
Seriously... With the help of technology We have figured out fairy dust, but we cant figure out how to fix brake dust?
Edit. Sorry, I was just informed that we actually haven't figured out fairy dust.
Edit. Sorry, I was just informed that we actually haven't figured out fairy dust.
07-11-2014, 12:51 PM
#109
Race Director
That is why I liked the Satin finished rims. You will not notice the dust that much and after some hard driving it will just look Powder coated black any way
07-11-2014, 01:31 PM
#110
Burning Brakes
Bill_CS4 - Awesome analysis! This reinforces what many have been telling us here on rennlist. Great to see the actual data. I went with steel. The cost savings afforded me some other options that were more important to me. Thanks for presenting the facts!
Dave
Dave
07-12-2014, 06:48 AM
#111
Just finalised by build for Oct build. I have gone for PCCB. Mainly for weight consideration being approximately 45pct lighter than the steel option I thought it was worth it.
I won't be tracking the car much. Maybe 2 sessions / year and not as aggressively as you guys do in the States, so I hope they should be up to the task.
I might have calipers repainted Guard Red to match the stitching so it will definitely not be one for "showing off" ;-)
I won't be tracking the car much. Maybe 2 sessions / year and not as aggressively as you guys do in the States, so I hope they should be up to the task.
I might have calipers repainted Guard Red to match the stitching so it will definitely not be one for "showing off" ;-)
07-12-2014, 07:23 PM
#113
Just finalised by build for Oct build. I have gone for PCCB. Mainly for weight consideration being approximately 45pct lighter than the steel option I thought it was worth it.
I won't be tracking the car much. Maybe 2 sessions / year and not as aggressively as you guys do in the States, so I hope they should be up to the task.
I might have calipers repainted Guard Red to match the stitching so it will definitely not be one for "showing off" ;-)
I won't be tracking the car much. Maybe 2 sessions / year and not as aggressively as you guys do in the States, so I hope they should be up to the task.
I might have calipers repainted Guard Red to match the stitching so it will definitely not be one for "showing off" ;-)
07-12-2014, 08:14 PM
#115
Rennlist Member
So much of the (perceived) difference in PCCB vs Steel performance is down to the initial bite point.... with the stock ceramics & pads running a rather more aggressive set up in this respect. you can replicate with steels by switching to a pad with a stronger initial bite....say PFC08s. also found the ensuing of interest in the PCCB vs Steel debate, herewith courtesy of fioran0 on Pistonheads: "Heres a graph from an independent brake test done on various cars. Of interest here of course is the 911 with and without PCCB. 350mm PCCB with 6 pots, 330mm Steels with 4 pots IIRC. Each cycle contains 5 brake stops from 100mph - 0mph with 20 second gaps between the stops. The first stop in each cycle was done using approx half brake force (0.5G) to measure pedal and the next 4 stops were done with maximum braking force (hence the panic stop label) from 100mph to 0 mph to complete that cycle. This complete cycle was then repeated until fade presented itself (or i presume boredom kicked in in the case of the Porsches and Corvette). You will note that the Steel and PCCB cars perform the same and without fade even after almost 50 repeat stops. You can see the BMW progressively loses its brakes from 4th cycle onwards and the Nismo Z hits full fade midway through cycle 3. I believe the Porsches were on Pirelli P Zero, the Vette on Goodyear Eagle."
07-12-2014, 09:18 PM
#116
Race Director
Just finalised by build for Oct build. I have gone for PCCB. Mainly for weight consideration being approximately 45pct lighter than the steel option I thought it was worth it. I won't be tracking the car much. Maybe 2 sessions / year and not as aggressively as you guys do in the States, so I hope they should be up to the task. I might have calipers repainted Guard Red to match the stitching so it will definitely not be one for "showing off" ;-)
07-12-2014, 09:51 PM
#117
Race Director
Bill's post is very interesting. There have been significant changes in PCCB's over the 3 generations, though, so this may or may not be the last word on the issue.
07-13-2014, 05:17 AM
#118
07-13-2014, 05:27 AM
#119
I doubt anybody can drive on the street at 100pct of the car potential unless they want to either kill somebody or get arrested pretty quickly.
07-13-2014, 11:05 AM
#120
Nordschleife Master
I've seen an interesting phenomenon where guys who autocross and have never tracked OR autocross and totally suck on a real track seem to think that autocross is more brutal on the car than doing a road course at speed...
