If you run your GT-R hard at the track, you might want to bring a spare set of brake rotors. 4000 lbs, 480 hp puts some heat into the rotors, and they should be monitored. If you want to save some time at the next brake rotor swap, or be like me, and prepared, pick these up. The bid's are starting at $0.99 and no reserve.
They will go perfect with a set of STILLEN/AP curved vane rotor upgrades in either slotted or j-hook.