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I just run what the factory says - 30 psi cold in all four tires.
if you check the tire pressure when hot, you should see anywhere from a 2-4 pound increase. down here in florida (it is now starting to be in the 85+ temp range during the days, my 30 cold turns into 34 hot without taking much time.
.....and BTW, with 99.9%(noone is perfect) of whatever DeeGee says because he is one of the most logical and helpful members of the CorvetteForum...herehere
You should consider Nitrogen instead of air.
With nitrogen tire inflation, improvements can be noted in a vehicle's handling, fuel efficiency and tire life through better tire pressure retention (less fluctuation), improved fuel economy and cooler running tire temperatures.