Excellent, thank you for sharing!
My only complaint would be kerbs. I feel like the physical mesh has bumps too, because my G27 goes crazy and starts grinding heavily, especially on the kerb after which you see RaceLAN banner on the left.
I'm working on a track mod too and I found that it's better to just leave a simple plane or box for physics, regardless of visual appearance. 1KERB tag still does the job of providing sound and force feedback. And my kerb feedback strength is below 20%.