[Cyride]

Cold tire pressure is what the pressure indicates on the side of the tire. That pressure is set at the beginning of the travel day. I have talked to the tire manufactures engineer's and have been told the tire is designed to handle pressures that increase due to heat over the course of the day. They said tires are more likely damaged due to under inflation. If I remember right my Sailun tires are all steel so there are steel belts in the sidewalls. If those tires are not inflated properly they may see more damage due to under inflation! My suggestion would be to send an email to the manufacture of your concerns, most likely you will get a response from engineering. In the mean time I suggest you err on the safe side and don't under inflate your tires.