IMHJ, if the tire manufacture or a sucessful racer at the same track don't give you tire pressures for a specific type of tire how will you determin optimal tire pressure without a tire pyrometer? A cooler/warmer temp at the center of the tire & you are not using the tire to it's max capability. Pressure wouldn't tell you the center of the tire is cooler.

This is the 2007 David & I am always egar to learn