Well part of that depends on the tires you go on there and Max limits of weight and pressure...
Like as for my TT I got 1 tire load range C and the other 3 are load range D's... The C is limited to 50 PSI and the D's are limited to 65 PSI...
So looking at the profile I got 60 PSI in all the D's and the C is maxed out at 50 PSI...
This is one of my first big project ot do once the snow leaves is to put on a fresh set of Load Range E's and not worry about them... But I would still aim for about 60-65 PSI...
My Dry weight is roughly 6600# GVWR is 8500#... Even my Pickup weighing in at 7300# I got 60-65 PSI in them...
But any rate pay attention to the load range of the tire, the max weight and pressure capablities... don't over do it...