2018b9

Mike panning at ECS tuning was very helpful in specing and shipping me 10mm fronts and 15mm rear spacers that worked out well.
I went with that setup as I didnt want too much poke and I'm happy with the result. First impression is that the car drives the same.
Will try to upload before and after pics as soon as I figure how to decrease file size/resolution.

2018b9

sigmachi96

I did 20mm all the way around.

ArvX147

Damn, that black car has a 15mm spacer and its still that far in? Not saying it needs to be flush, your personal tastes are what matter, but wow what a crazy factory inset!

fettekatze

Looks like they made the fenders stick out more but didn't bother to change the wheel offset from the A5/S5.

Rob O

Important to keep in mind the Coupe's fitment is slightly different from the Sportback, with the Coupe being 20x9 ET26 and the SB 20x9 ET22. This is true of both the "flag wheel" (like mine below) and the 5-spoke shown in both of the previous posts. So obviously that has an impact on fitment after spacers.

This is my SB with ET22 and 10/12 spacers (I think. Maybe 12/15 ... will verify). I also have the ET26 version of the 5-spoke, but haven't test fit them (with or without spacers).