Going off road

zulu52, you might share your tire size too. Regarding off road, less tire pressure gives much better traction than highway tire pressures, especially in sand. Of course the problem with "airing down" is when it's time to get back on the highway, you need to air up. There are some solutions for that, and I think some threads regarding both that issue and the issue of loosening tie downs for more truck bed flex on uneven terrain. And with a load on, you have to be careful not to air down so much as to lose a tire bead seal (a lost bead seal between wheel and tire is that much worse than a sand stuck). Experience, and a little at a time are good measures to help learn.

Off road with any RV is always going to be easier with smaller and lighter versus larger and heavier.