Great review of SCE brakes part one4 May 2016 09:51
Very positive new review of SCE's OEM replacement kit in a Porsche - a snip at $11,998:
Http://rennlist.com/forums/991-gt3-gt3rs-and-911r/932365-review-oem-surface-transforms-pccb-rotor-kit-for-991-gt3.html
"Hello Fellow Rennlisters,
I took the Porsche PCCBs off my GT3 for safekeeping and replaced them with a turnkey OEM Surface Transforms PCCB kit from the UK. The Surface Transforms kit is approved as an OEM replacement part kit in Europe and Germany (under E90 and TUV). The kit includes the rotors and hats, spacers and bolts. The 5 mm spacers are used to accommodate the larger rear rotors, which are upgraded to 400 mm. Notably, ST only recommends Pagid PCCB pads such as the RSC1, as the pads and rotors were engineered as a package. I emphasize that this ST kit is not a rotor kit from Movit or RB, it is directly from ST UK and is engineered by them as a total package.
We are all very familiar with the multiple threads and perhaps 100s of posts regarding the pros and cons and value propositions of PCCB vs steel, so I will only share that I did my own back of the envelope calculations and decided that the ST kit was worth it at $11,998. Moreover, the ST rotors are well proven and have been run by racers and weekend warriors like myself with success here and overseas, and guys are seeing ca. 5000 track miles before refurbishment at 2K a pop.
The ST rotors may be good up to as many as 5 refurbishments (depending on how you drive), so they may be worth approximately 25K miles if you change pads at 40 % left and don't let the rotors get too worn. If you let the rotors go too far, you may miss one refurbishment cycle. That's correct: slightly grooved or showing signs of wear vs. carbon density measurement at about 5000 track miles. Carbon density measurements may be performed on these rotors, but the results are in question. The 5000 number comes from ST and the distributor, after feedback from racers who are realizing multiple seasons out of the ST PCCBs. This ain't no GTR godzilla track day hearsay, but I don't believe alot of what I read on the interweb, and the reader may be skeptical of this post as well!
To refurbish, ST skims off 0.2 mm to remove degraded oxidized material, performs a chemical process to recover the surface stoichiometry and composition, followed by Hades style baking. The life of the rotor is ca. 2 mm total thickness reduction.
As covered prior, the ST rotors are made by a different process than the Porsche Brembos, so the refurbishment process is possible and repeatable. I watched a video on the Brembos on youtube and perused the ST patents as part of my DD."