Kev was it FCS?
During a full day event on a warm day you will not believe how hot the wheels etc get, even with cool down lap. The air escaping from valves whilst balancing pressures is unreal.
Silverstone GP is 3 1/2 miles per lap, my contis were shredded & i didn't stay out too long.
My exaltos on Trophy had a michelin man on them after Donington it had no head!
Trackwork needs stiff sidewalls most everyday tyres are not.