Originally Posted by Buckskin
I run my tire pressure slightly less than max pressure called out on sidewall of tire. This way when tire heats up it will be about max pressure. Too little pressure may cause tire failure.
As a tire engineer I can tell you that is not the best approach for TT owners.
TT tires should run CIP as the tire pressure on the sidewall associated with the max load. You do not need to worry about pressure build up if the tire is not overloaded and you do not exceed the max speed (65 for most ST type tires) This pressure increase of a few psi is normal and accounted for in tire design.
The lower you start the pressure the greater will be the pressure increase.
You also want to lower the Interply Shear in the TT tires. This is the force that is trying to tear the belts and tread off the body of the tire.
If you want to learn more about this force, that is high in TT due to trailer suspension design you can Google Interply Shear tires
and read the technical posts and papers or simply increase your cold pressure
I write a blog on RV tire application and safety. RVTireSafety.com
Also give seminars on tires at RV events across the US. 40 years experience as tire design & quality engineer for major tire mfg. Freelander 23QB on Chevy chassis is my RV