Here's my Q,
What is going to make the biggest impact on how well brakes work? IE, friction area on the disk, area of the brake pad, or total area of the caliper piston(s)?
I'm doing my home work before I start looking for parts for my P510. I'm not realy sure (yet) if I'm better off with big rotors, pig pads, or big four pots. To further complicate my decision, I want to stick with 22mm(ish) rotors. (to keep the weight down, that big turbo nissan stuff is much too heavy for the weight of a P510)
I have a pair of 280ZX rotors, which are 265mm, and have a friction area 55mm wide. BUt my calipers are incomplete. Then there's S4 RX7 stuff, which is a 280mm rotor, with a 4pot caliper. But the pad area is only 40mm tall. Of maybe the rotors from a SR20DeT S13, which are also 280mm, but I'm not sure how tall the friction face of those is yet. The plain S13 rotors are only 250mm, with a single piston and 40mm talll pad. They fit under an alloy 13", but I've got 17's so I mite as well got as big a is practical.
So which aspect do you think has the greatest bearing?