I was on metzeler racetec 200 sc1 and it was quite a warm day.
Tyre was awsome for first few laps then it overheats and grip falls of a cliff.
I do believe half of it was the rear showa shock as that to felt good for few laps but when i pulled in the pits its damping was almost non existant.
Think the oil was over heating as on the road the shock is spot on.
The other half of the problem i believe to be that i didnt have the traction control on and im 6ft 4 tall and quite heavy.