I run 45psi cold. My general rule is 10% under Max PSI. I don't like to slow down for the turns, so I want some lateral rigidity and will sacrifice a little ride comfort to achieve that. I have done that for years and never had a tire wear in the center, ie over inflated. The door jam number should be used as a "Do NOT operate below this number" setting. For maximum ride comfort/soft ride use the 39-40 range. It looks like everyone here is in the ballpark.