I had an evening track event at Snetterton today, and my local club who organised the night had managed to get the Technical and Motorsport Manager for Toyo Tyres (Alan Meaker) to come along and do measurements, give advice etc
After a 20 minute session, starting with 32 PSI cold, my measurements were:
<edit>Bridgestone RE010 by the way, stock size</edit>
N/S Front:
Tread Temp oC (Out, Mid, Inner) - 65,67,66
Pressure PSI - 39.5
O/S Front:
Tread Temp oC (Out, Mid, Inner) - 58,48,47
Pressure PSI - 38.5
N/S Rear:
Tread Temp oC (Out, Mid, Inner) - 52,54,56
Pressure PSI - 38.5
O/S Rear:
Tread Temp oC (Out, Mid, Inner) - 42,40,33
Pressure PSI - 37
As expected, the temperature ranges reflect a clockwise circuit, and with more aggressive camber I think the O/S would have been more even across the tyre width.
As for pressure, in the past I'd reduced the cold pressure so that they'd run at 32 PSI hot, however this time I was really impressed with the grip levels, I think having the higher pressure helped the sidewall stiffness, and the even temperature spread over the N/S tyres I think shows they were being worked evenly.
My 2p anyway
Cheers,
Alex