Lots of great input here! Thanks to all! I just wanted to let everyone know that I decided to just upgrade the rotors to GiroDisc for now w the yellow (29) Pagid pads. I had the GD slotted rotors on my 991 and I liked them a lot for the money. Got all 4 for under $1760 delivered. 340mm front (up 22mm) and 325mm rear (up 26mm) and we shed a few pounds of unsprung weight! I realize the caliper/pad size didn’t change but the cooling should be slightly better. I will let you all know my thoughts after the next DE. I do appreciate ALL the comments. I just had to keep the cost down, especially if I want to get a GT4 in a few years. I also have a good friend in Peoria who did this exact setup and we are both similar skill drivers and he liked it a lot on his Cay S Sport! Cheers!
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Just returned from NCM full grand course and with the GD rotors installed front and rear. WOW! What a difference in the braking. I am very happy with this setup. Total confidence now. Of course they squeal like a stuck pig on the street with yellow Pagid pads but for the track they are the bomb! Was also thinking of SS brake lines. Cayman S has 56k miles on it and I’m due a brake fluid change after this weekend’s IMS HPDE. Thoughts? TIA

Hey RobC4s,

i spend way way too many hours on this subject, researching how to upgrade the Oem brakes on my Cayman R. I ended up doing a complete front and rear upgrade to 997.1 GT3 brakes, including the master cylinder and running 350mm disks all round.

It was expensive, just under usd$5k + rotors + pads + labour (unless your doing it yourself)

But the outcome for me was worth it, it’s still all oem Porsche gear and it bolted up with no spacers or custom anything.

Any it stops like like nothing else and I haven’t had a single brake issue again, well, I’ve only done 8 track days on this setup, but my oem cayman brakes were causing me grief every trackday, so this is so far maintenance free!

my pads are lasting 3-4 times longer, so are my rotors from what I can tell, and I haven’t had to bleed the brakes once yet, although I will soon, just for good measure.

if this sounds in your budget, I can post up all the part numbers. There are a couple of quirks to getting all the right parts so they work together on cayman not 911.