If your cold pressures are what you describe, you will find that the running pressures are not relevant.

What gets dangerous is when the pressures are too low, the sidewalls are flexing an unacceptable amount and the more they flex, the more they heat up with a possible final result being a catastrophic failure in the form of a blowout. At that point you consider yourself lucky if the only problem is a blowout, because if the tire shreds in the wrong way the potential to tear up your wheel wells, brake lines and do other damage is very high.

You cannot look at a tire and judge the pressure to be low, and I laugh when I see truckers thump their tires with a bat or tire iron because unless they are really exceptional people, the best they can hope to learn is they don't have a huge difference in pressures, but they will never know if it is the correct pressures.