Goodyear link for trailer tires.

I am saying...over inflate your tires no matter what the load is, it is way better than under inflated and won't hurt your tires being over inflated. I also use steel/brass screw in valve stems, no rubber stems here.

My current set of tires were made in China now...I know sucks. I ran them out west last summer at 80 MPH and in 115° temps with no trouble. This year I have been to the east coast, Maine and Fla with no tire trouble..."knock on wood". Last year we went to Sodona, grand Canyon, and Moab Utah when it was 100+° and pulling our heavy azz durango on our open trailer with new china tires. I was worried a little on that first trip with my china goodyears but all has been well since then.

Use potatoes chip bag clips to keeps our tie down straps from waving in the wind and damaging our trailer or car.
Monument Valley.