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Looking at a 2018 Sportback GS - anyone have any experience?

I've had my 2019 GS since new. I often drive it harder than I should because its so much fun. It seems to be well made as it hasn't developed any creeks or groans and it remains tight as new. Not a single thing has gone wrong, nothing. What I appreciate the most is the controlled ride the electric suspension gives.
 
The Cascada wheels have an offset of ET 41. In contrast, the factory GS wheels have an offset of ET 49.

Offset is not the only thing that affects the clearance to the caliper, but that's not an insignificant change. It is my understanding that the spacers are required, but hopefully @WinnerGS can confirm.


@jeffcam1211 has previously confirmed that spacers are a necessity:
 
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