Hello, I am also looking for a new set of rims and it's a real puzzle.
I have a Sportback RS3 8V FL 2019, Front: 8.5Jx19 ET53 (255/30 R19 91Y) / Rear: 8.0Jx19 ET49 (235/35 R19 91Y)
Almost all aftermarket rims I like, (example the HF-5 from Vossen), have offsets from 31 or less, to 45 ..not sure...