My first post on here!
Not sure if any of you are aware that there is an engineering re-work on the brakes for the RS3. I am now on my third set of discs and pads in 15,000 miles. The last two sets have been replaced under warranty due to heat damage resulting in the car shaking when applying the brakes (bascially warped discs). Same issue that people faced with the TTRS.
They had the car overnight and have drilled 24 holes in the driver side bumber grill (the one that is blanked off) and run duct work from there to cool the discs. This was done a month ago and it seems to have solved my problems.