Hey Guys,

Has anyone here successfully replaced their steel rotors with carbon ceramic ones?

I would prefer to leave my red calipers on the car (as they go very well with other colors on the car), and replace just the rotors + pads.

Is there a write-up or a how-to by any chance? I am debating doing this and would like to know what is involved.

Thank you!

 

In your case I would just go with the Surface Transforms rotor replacements: https://surfacetransforms.com/porsche-991-brake-kits

 

+1. This is a big step up in quality from PCCB and less expensive.

 

Thanks so much for pointing me in the right direction!

Would you know how the yellow vs red caliper disks differ from them?

Also, which pad would you recommend?

Brake Pad Options

ST-BP-1072: Front Axle Set Pads RS29 Track Only
contains 4 brake pads
£408.69

ST-BP-1071: Front Axle Set Pads RSC1 Road and Track
contains 4 brake pads
£578.26

ST-BP-1076: Rear Axle Set Pads RS29 Track Only
contains 4 brake pads
£285.48

ST-BP-1075: Rear Axle Set Pads RSC1 Road and Track
contains 4 brake pads
£306.68


Thank you!

May I ask, how are these higher quality than OEM?

 

hoping to do this one day

https://rennlist.com/forums/991-gt3-...ally-here.html

 

You can read about it on their website. The PCCB discs have a very thin friction surface that is laminated onto the rest of the disc, while the ST is homogeneous throughout and can be refurbished 3 times.

The Red and Yellow calipers are the same, but the Yellows have longer mounting ears that place them further from the hub to use larger rotors. Spacers can be added to the Reds to achieve the same geometry.

 

I also vote for surface transforms, run longer, much cooler, more pad options and the pads last waay longer.

 

Steels have calipers that fit their 380mm rotors (F)
PCCBs have calipers that fit their 410mm rotors

To use your OEM GT3 Steel calipers will require a 380mm rotor, caliper extensions, or new calipers.

One option is that you can buy a set of good, used PCCB calipers for about $2500
https://rennlist.com/forums/market/1170952


BTW - I am with you 100%, as I feel the same way, OEM Steels do not have the braking performance I want in a GT car.
After 3 GT cars with PCCBs, I was cautioned on the 991.2 GT3 about early deliveries experiencing rock jams on the inner barrels with PCCBs resulting in wheel damage.
So I thought I was informed avoiding the PCCBs for steels. Boy was I wrong, I really do not like the initial bite, progression or depth of braking of OEM Steels.

Even took it to my dealer and asked the Tech drive it and give a personal opinion resulting in declaring my OEM Steels are 100%.
SMH

 

Thanks for the info and input. I have not yet driven a car with PCCB's... but I am looking for an improvement / upgrade to make the brakes better.

Do you think it's worth it to upgrade the calipers to the slightly larger one, versus just running my own with the 380mm rotor?

 

No, the ST rotor kit comes with spacers for just a few bucks more.

If you aren’t married to carbon rotors, AP Racing also makes a very nice setup with lightweight iron rotors and better than stock calipers. Are you going to be doing lots of tracking? The stock brakes are actually very good with better fluid and pads (Endless RF650 fluid and Race Technologies RE10 pads are my choice)

 

I am considering upgrading for two reasons:

1. I think the steels are ok brakes, but not great. My E63S had wayyyy better steel brakes and sort of put the GT3 to shame in stopping power. We are talking about a heavyyyy car here too.

2. I am so damn tired of the brake dust. I have the black wheels and they are disgusting after just one drive. This is not a deal breaker, but would be nice to fix this problem at the same time.

What option would you go with?

 

What makes the AP calipers better than the stock calipers?

I have always thought ST rotors were the way to go for a CCB alternative. I have PCCB's and just plan to track the hell out of them and replace with ST's when they are worn. Has anyone run AP calipers with ST rotors?

 

They are not compatible.

Look at AP Racing for Radi-CAL caliper advantages over stock (many)

 

This is just not true. Just because the Benz brakes may be over-boosted does not make them better at stopping. Unless you just can’t be bothered to press the brake pedal harder? I suggest you take some track instruction with your stock brakes. This will show you how well they can work and bed them in if needed (or reveal a problem if you have one).

 

CarAndDriver tested a 2018 E63S and a 2018 GT3. From 70-0, the E63S stopped in 155 ft. The GT3 took only 146 ft.

https://www.caranddriver.com/reviews...n-test-review/
https://www.caranddriver.com/reviews...c-test-review/