I don't get why people are upgrading brakes on model S.
It's not a track car, and the brakes on it are very sufficient for hard stops in short order!
It just seems like misguided spend.
The 6 piston combo I put on stops the car on a dime, so much better.
The OEM rotors couldn't stop at all for the first few times after a rain when they got rusty. They also felt too soft all the time.
So you could just change out the rotors and pads but I wanted the challenge, it was a fun project.