I don't really under stand the point of going to bigger brakes with 6 piston calipers if you're not racing, unless it's just for the cool factor. ABS kicks in with the stock rotors and pads, and after installing the ceramic pads I was doing some testing. I got the brakes to the point that they were smoking heavy and I could still lock up the tires and make ABS activate. If one was racing I feel the money would be better invested into a better wheel/sticky tire combo, you'd get faster laps than you will with shit tires, heavy wheels, and 6 piston Brembro's.