Dealer sold it to me with 8 psi in all 4 stock tires (XRS w/beadlocks).
He said that was the best all-round setting, but I just recently pumped it up to 12 psi. I like the extra 1" GC and it feels better (more sporty?) now, easier to get the rears spinning out in turns etc.
I think the original 8 psi was good for grip until I gained a little experience. And it was winter time then too.
Thanks for the input. I mostly run forest service trails and some rock crawling. That's why I want the lower psi. Ground clearance is always an issue with the Max, tho. That's why I don't want to get too low.