If you have enough issues with tires on your trailer I recommend you address that directly. May need new tires or larger tires and trailer, I try to keep my payloads below the maximum ratings by 20% in most cases. Maybe I am lucky but I have not had a tire fail while on the road in the last 10 years that I can remember. I have had older tires on trailers leak down while parked for weeks at a time.. Changing out the older tires removed that problem.
My backhoe tire was prone to slow leak down and I could not find the leak. It dawned on me one day that the tire may not have been seated fully on the bead. I aired it up to the 25 psi maximum pressure and left it over night. Bleeding it down the next morning to the recommended 16 psi and haven't had an issue since.