I have a 2001 S3 which has had bigger discs put on it, the front pads are ceramic and the backs are red stuff pads. The calipars are standard.
There is alot of spongyness when you push the brake pedal. Also When the aircon is turned off the pedal becomes very soft. I.E. if you have you foot on the break pedal and turn the aircon off the pedal becomes much easier to push?