Well said… but then there’s a little misinformation there. Manufacturer rates the tire PSI when they’re cold, they’ve already accounted for the increase in pressure in heat. I run 45 sidewall and the flex still pisses me off when i’m going sideways. I’m pretty sure even with my 48-49 psi, i still get full surface area due to the flex.
As for belting and chunking… I’ve experienced differently. Remember Chris K’s yokohamas? it peeled right off in a big ass belt. That was due to underpressure not overpressure. Overpressure is an entirely different concept in tirewear…
I know people run like 28 psi on they’re uber low profile tires, they’re just doing that to have more ride comfort for street driving. and their already low profile makes up for the sidewall stiffness.