Coupe vs Sportback wheels

[VVG]

Does anyone know why the Coupe wheels have a 26mm offset and the Sportback 22mm? I find it odd that there would be different wheel dimensions for the same wheels for the two models, so there must be a good reason. I am in the midst of configuring aftermarket wheels for my '22 Sportback so I am curious.

[Smac770]

I doubt it's about the chassis type (sedan / wagon / coupe / sportback). They all use the same set of wheel options, though which style is offered with which chassis type in a specific market is no doubt going to vary.

B9 RS wheels.jpg

[JohnEnglish]

If I'm not mistaken, it was only the 2018 coupe that had the different offset. Starting in 2019, the coupe and sportback shared the same offset.

[Ed99]

I doubt it's about the chassis type (sedan / wagon / coupe / sportback). They all use the same set of wheel options, though which style is offered with which chassis type in a specific market is no doubt going to vary.

B9 RS wheels.jpg

for all 2021 and up models should be running on 20x9 22ets?

[Smac770]

Going by the 2019 US brochure and order guide:

RS5 coupe:
standard - 19x9 et24 10-spoke LD8
black optic - 20x9 et26 flag wheel UJ2/Z33 (fifth one in the et26 row)
matte alu optic - 20x9 et26 flag wheel LD8 (forth one in the et26 row)
20" wheel pack - 20x9 et22 5-spoke 8AU/K80 (third one in the upper et22 row)

RS5 sportback:
standard - same as coupe
black optic - 20x9 et22 alt-flag wheel UJ2/Z33 (second one in the upper et22 row)
matte alu optic - 20x9 et22 alt-flag wheel LD8 (first one in the upper et22 row)
20" wheel pack - same as coupe

[Smac770]

for all 2021 and up models should be running on 20x9 22ets?

That's simply all the wheels in the parts catalog for the B9 RS4 and RS5. Which ones were used on which models in which markets which years, you'd have to consult the actual order guide for that year for that market for that model.