I've got a set of originals from an s3 refurbished in glossy anthracite
I have 19 OEM rotors purchase off Ebay for a steal and in great condition. I had them fined tuned by N8 at Kowalski details. I would just keep looking for OEM. For me, the issue was the size. 19 with an 8.5 gave me too much stretch. The 8 width is perfect. Most reps in 19 come with 8.5 for some unknown reason at least to me
It depends on the offsetCan the A3 take the 19" wheels without any rubbing etc, I have a 2011 sport back and was looking at larger wheels