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...
Just because the new tires will have a higher load rating and CAN safely hold more pressure.....there likely is no GOOD reason to actually do that. Unless you have actually increased the total weight beyond the original recommendation. And if that is the case, there are other things to be concerned with too.