I was just Cayman part surfing and came across these. They seem awfully cheap compared to the OEM parts for the later models. Is there something "wrong" with them?
2007 Porsche Cayman Power Stop Brake Kit - 116 Reviews on Powerstop Rotors & Brake Pad Kit
2 things you do not try save money on: tyres and brakes
Those aren't ceramic rotors. They are steel rotors and ceramic pads in a set.
ed
I must have misread the copy. Mea Culpa
Please note that the comments are generic ("I installed these on my Golf..." "I have these on my Ford F150 4x4...") and don't mean a thing.
That's incredibly cheap, and less than a good set of rotors will cost you. Ceramic pads for the Cayman prolly cost about $80 each corner and I'm only just in the ballpark with that guess.
I'd stay away from these...
Is it possible to replace OEM standard metallic brake pads with ceramic pads with similar braking capability?
Similar braking capacity to the OEM metallic pads? Or similar braking capacity to the PCCBs? And for what purpose?
So....there's a couple of issues here. First, while one might think that brakes stop the car, the tires actually stop the car. The brakes are a place for converting most of the kinetic energy of the moving car into heat energy. Once you have a caliper/rotor/pad combination that can cause tire lock up under braking, then there's no additional stopping-in-minimum-time benefit to having a different compound with higher friction (although different friction does change the feel of braking).
The benefit of PCCB is that the rotor, being ceramic, is both lighter, and has a higher specific heat capacity (ability to store heat per unit mass). All things otherwise being equal, a material with higher specific heat capacity can store more heat energy with a smaller temperature change. The reduction in mass of the rotor offsets some of this advantage, but still leaves you with a system that is an effective heat sink but being much lighter gives a handling advantage due to lower unspring/rotation mass.
Racing pads and fluids are designed to take higher temperatures, which is why they are needed at the track - but often the tradeoff is that the pads often don't work well at low temps (or eat rotors, or dust like crazy (Hawk Blues), or...).
So...if you mean, can you get ceramic pads that work as well as OEM pads against a steel rotor, it depends on what purpose you are looking for. For the street, one can certainly find ceramic pads that are nearly as good as OEM pads and won't dust as much. For the track, I don't think I've seen any ceramic pad compounds that are track rated.
ed
Ed good post wish I could "like" it from my phone!
Sent from my iPhone using Tapatalk which means I'm probably traveling at the moment so please excuse any brief or hurried replies, spelling errors, etc. Etc.
