Hey! I guess I did get your message! Sorry, I was looking for a PM.
So I included the tire sizes and offsets in the GTS lowering thread. Let me know if you want me to share again.
The wheels are ADV.1's
https://www.adv1wheels.com
I don't believe this specific style is available anymore but I think they were the ADV05's? They can make any wheel a centerlock and I believe these were a 5 lug that was converted to a Centerlock configuration. They were originally on a Turbo as I bought them used from another forum member.
Anyway, hope this info helps!