Check the air in the tire when truck/trailer/vehicle empty. Add substantial load. Same psi (within reasonable amount) unless the temp has changed enough to increase the psi.I'm confused.
Doesn't adding weight to a vehicle theoretically compress a tire? Doesn't compressing a tire reduce the internal volume of the tire (at least theoretically?) With the same volume of air in a tire whose volume has been reduced by physical compression, wouldn't the tire pressure increase? (Apparently I need tutoring in physics.)