I'm not really a hotlapper, so my r2's are gone after 4 laps.
It's probably because I'm a tad agressive on the brakes and pushing the tyres over the limit in corners.
You seem to do a heck of a good job there though, I see my temps rising to 140, then I can't take corners without sliding, thus pushing the tyres up to 190-200 degrees.
I have to say that I dislike the immense tyre temperature rise after a spin, and just the IMMENSE lack of grip at high temperature.