I think Ponch has mentioned before that information he has said that an important aspect of tire temperature is how much it changes from a "cold" tire temp state to a "hot" traveling temp. I believe he said the amount of temp change was relative to correct/incorrect tire inflation pressures, for the load being carried. Having an IR temp gun should make it easy to know what your tire temps are, and whether any inflation adjustment is needed.
Maybe Ponch , or other tire "experts"
can provide some meaningful info on this subject.