Trailer tire pressure

[jkbstingray]

1900SCR, what PSI are you running in your trailer tires? I normally don't fret this too much as we're 8 blocks away from the boat ramp at 35mph. But we're moving next week and I will be pulling the boat 275 miles at highway speed. Single axle, tires are rated at 80psi cold. I check mine and currently have 60psi. Will that work, or do I need to adjust?

Thanks!
Jeff