2-3+ years over the course of 20+ track days + street driving is not unheard of with stock Porsche brakes. That is how good the brakes are.
Add race pads and they will stop even better with marginal more wear.
Smoothness and carrying the momentum is key guys. Just like Topless, I have done 75+ track days on Boxster and Vette (some vette guys chew through brand new rotors/pads in ONE day
). They are obviously mashing on the gas/brake too much
