I run my 2022 Mav tires at 42 PSI and runs great, the ride is comfortable for me and the tires are wearing evenly alll around. I rotate the tires about every 8,000 miles with the oil change.
I made a trip to Ennis, Montana pulling a trailer with an ATV, I guessing between 700 to 800 lbs with the trailer. Rear bed was also full of gear. I left the central Sierras, California and made it in one long day of driving. I averaged 29.6 MPG and never went over 70 MPH.