"Ted" wrote in message
...
I bought a boat/trailer last year. The tires were at 30psi. Yesterday I
read the sidewall, and it says that capacity is 575 pounds with the tires
inflated to 60psi!

The boat is about 500 pounds. Any idea what my pressure should be? I
only take it 15 miles twice a year. Thanks.

Those trailer tires are probably smaller than your vehicle tires...
therefore thay spin faster.
They are probably bias ply rather than radial...which means the sidewalls
don't flex as much.
they should be inflated higher than your vehicle tires so 50-60 psi sounds
about right.
Might be some info here useful to you.
http://www.championtrailers.com/tire_art.html