Manifold

I'm planning to buy a 991.2 GT3 RS with PCCB. The car has 13k miles on it and has been tracked. The rotors look to be in good condition, and the wear indicators aren't visible, which I understand to mean that the rotors have minimal wear (carbon loss). There's a light scraping sound from the left rear when braking. Most importantly, the car needs much more braking pressure to slow the car than I'm used to in various other Porsches with PCCB and regular brakes. Is it normal for the 991.2 GT3 RS to need a lot of braking pressure? Could the need for so much brake pressure indicate a problem with the rotors, pads, and/or brake booster?

dave_uk

My low mileage car has always had a rubbing sound from the rear when breaking, I believe this is normal. Same for breaking, I often find I need to apply much more brake pedal pressure than what you would think when stopping from speed, even more so when the brakes are wet after rain etc!

famoruwa

Porsche Dealers should be able to give you a report on the brakes (pad wear and rotor integrity).

The light scraping on light pedal application should be normal.

You shouldn’t need much brake pressure at all for normal driving. When the temp is cold, you may need get the ceramics warmed up on initial drive.

mattyf

Was it cold or wet out? PCCBs require more force if it’s cold or wet out and the brakes aren’t up to temp. It can even be downright scary on a wet freeway if you haven’t touched them, then need to panic stop.

Ecosse911

I have a low mile RS and yes the brakes sound terrible especially after the car has been sitting, even in doors, so the brakes need some brief encouragement. I put this down to cleaning up the surfaces and in general the PCCB need more pressure than steels. One time the car sat outside on a trip and in the morning it was very cool almost damp and for a brief second it felt like I had no brakes. On track I have had the occasional screech like I ran over a cat but very infrequent. The only way to tell if the rotors are worn is to check the density with the carboteq tool. However the 991 gen PCCB appears to be very robust so as long as no cracks, chips or deep scores in the rotors they are likely good. Even with these quirks I love the brakes and the RS with the aero and larger tire contact patch has fantastic braking power for a street car.

Manifold

When I drove the car, weather was warm and dry. Even after the brakes were warmed up, it made no difference - lack of friction, and therefore need for high pedal pressure to slow the car.

I drove a 991.1 GT3 with PCCB years ago on track, and didn't feel that I need extra pressure to slow the car. Drove one on the road, and same thing, didn't need extra pressure. I also have a 991.2 TTS and 992 TTS with PCCB, and neither of those needs the brakes to be warmed up or need for high pedal pressure.

jcannon

No sounds no creeks no rub NOTHING on my 3500 miles

catdog2

I would be careful, maybe the pads are bad kr brakes have had more abuse than it looks. The pccbs
's on my .2GT3RS are excellent have a nice bite and feel linear. They do require a little more effort than the pccb's on my .2 Carrera T but then the latter are overly touchy for some reason.

Ferrarif430!

Mine requires more pedal pressure than CCB’s on my Ferrari .

I have the same noise you’ve described from rear, unfortunately I sent to my local Porsche Dealer and they replaced all (4) pads for noise - but no change .

completely normal , they should have known that

User 81423

Sounds like something is amiss and CPO does not cover brakes.

PCCB’s bite like a tiger.

famoruwa

If you can't get the dealer to allow you to test the brake feel with another vehicle with PCCBs there at the dealer, maybe find a buddy with a 911 with PCCBs, and test with one of the service technicians to verify the difference in feel you are referring to.

Have them give you a brake pad/rotor report on the car before purchase.

no401k

doesnt sound normal to me. My car at 7k miles is almost too grabby, i hardly use the brakes i just let it coast or use engine brake in the city. It hardly rained here in socal on average(so mostly warm and dry) but i have driven it in damp weather, no difference

Thrownaway

They are cold.

Manifold

Doubt they were cold after repeatedly braking hard from high speed on a warm day ...

Dguth

I have a 991.2 GT3RS in Miami Blue. The bake pedal feel on these with CCDBs compared to other similar cars do require more pedal pressure to achieve the same degree of bite. Even then the bite isn't aggressive as many are used to. I've had to learn how to adjust my pedal pressure. Once learned, it's no big deal and performs awesome. Just got to get into the brakes with more force, the car will then respond...