trailer wheel weight rating/compared to tire psi rating?

I looked at wheels at E-trailer, in my style/size, and the highest wt rating I found was 2,640, compared to mine at 2,600. Not enough to consider buying new wheels.

I have no psi rating on my wheels, just max wt 2,600. I kind of agree with above, since no max psi listed on my wheels, I should be able to inflate them to 80 psi, rather than 65 psi. I will never have more than 2,600 on a given wheel, but would like to use the tire margin of 2,830.

Jerry