As the title suggests, I've had my S3 SB for about 8 months and a total of 7,000 miles and I recently noticed the breaks vibrating under light braking....as its still under warranty I took it to the stealers and they have diagnosed warped discs, hence it is booked in to have them replaced !! I would love to say this is because I drive it like I stole it, but I don't......I press on ocassionally, but as a rule I am pretty sympathetic mechanically with my cars, including the brakes and this is an 'S' car !!! Anyone else had this problem ?