I changed all four at 69k. all four were in need of replacement. considering I drive as fast and hard (possibly faster and harder) than any of the turbo guys on here I'd say that's a decent amount of miles.
as for performance, I was impressed "out of the box" so to speak. I rarely noticed any fade stopping under 100mph a few consecutive times, and only after a few consecutive +100mph stops noticed significant fade. with the cars low weight, ebd system, and low drivetrain mass (assumed from the low drive train power loss) the factory brakes and brake system are well suited to the driving style I use it for
I replaced the OEM equipment with tri-netmotorsports ebay rotors and ebc red stuff pads all the way around a 1000 miles or so ago. The rotors are dimpled and slotted; the slots do not go through the rotor, only as deep as the dimples. I've never seen that, but figured it's less likely to crack so what the hell
The pads are awesome. nothing less I could say about them. also, now when I'm driving down the road they make this cool swishing/ticking sound. they stop better than I'd ever imagined
