Am in the process of replacing the tires on the trailer. Current tires (and the ones which came with trailer) are load range C and maximum psi is 50. Have been looking at the new Goodyear Endurance...
Never read a post where a wheel was damaged by over pressure. If you are that worried, get wheels that match the load rating of the new tire. Good excuse to trade in the steel wheels for some nice aluminum. What size tire are you working with?
Only the wheel manufacturer can give documentation on specifications. Good luck.