Originally Posted by WeBeFulltime
All tires should be inflated to the desired pressure while COLD. Makes no difference what the tire is on. Truck, trailer, motorcycle, kids bike, etc makes no difference.
This is one reason that the tire pressure monitors are so essential. You can monitor the pressures and temp trends on your tires both hot and cold so you know what the tire pressure should run under "normal" operating conditions (IE: when they are hot). That way you know if you need to add a couple pounds of pressure to one or not.
One other thing I also do is make the rounds and touch the bearings with my hand or laser temp them at every stop. Not a bad idea to also take out your phone and use reverse camera to look at the springs at least once a day....