2006 Malibu Maxx SS. After about 15,000 they have proven themselves but seemed a little pricey for the overall quality. They warped forward quickly the first 5km but somehow snapped through the warped stage after another disappointing 5km. I had quality Pirelli tires so it wasn't the tires. I drive and brake hard and yes, I followed the break-in instructions exactly. New pads were also used. Do not use drilled rotors as you will never be able to turn them. You CANNOT make them. Next time I will try the Cryos in a sportier car.