The wear pattern, together with your LZ needs will dictate the pressure. Lower pressure will scrub off the shoulders of the tires and will make it hard to push the plane around. It will also provide "cush" on landing, will provide floatation on soft stuff, and will absorb some LZ roughness. Higher pressure will do just the opposite.
I wore out my 26 bushwheels rather rapidly using low pressure; the wear was on the shoulders of the tires. I built them back up with Herculiner, but that didn't last very well. Built them back up again, AND increased the pressure to 20. Much lower wear rate now, but not as much forgiveness of my bouncy landings and certainly not as much forgiveness of roughness. But I have bungees, which are sufficient for the roughness I typically encounter.
FWIW, it's easy to let some air out of the tires if needed out in the boonies somewhere if soft stuff is encountered. Less so to add air back in.
I'm based at KTDO, a paved runway. But I land on the grass next to the runway 24 lights almost always. My neighbor sez that's 24R. Ha!! Haven't asked the airport manager, and don't intend to - - -