I dig in the attachment and I couldn't find the proper temperature for the tire. Do we know what's the best for RA1 and R888? I know I started to have problem on full tread dept RA-1 around the 145F. What's the proper temperature we should start to spray them with water to cool them off?

Goeff and I cut about a second(or more) at the national when we brought the tire below 145-150F.