Ran at recommended pressure on sticker inside (83 PSI) for a year or so. Went to commercial Goodyear dealer to have tires rotated and who also recommended running at or near top of cold PSI (110) ON the tire. Have been running at or near that since. Ride is much better for us as well. One front tire had shown some wear (probably due to misalignment). That's on the back now. BTW, inside tires on back do not rotate. Back tires should not get out of alignment as they just follow.
Also, the valve extenders were the first thing I had added to our 2015 31UL when we bought 2 years ago. Money very well spent as there is NO way to get to OEM valves on the outside tires (at least with the 2015 hubcaps).
2015 Jayco Precept 31UL
Tow: 2014 Ford Fusion SE HYBRID
Blue Ox BX7420 Avail Towbar
SMI Duo "Stay in Play" Braking
Barley, our Golden Retriever, on board and Buster in spirit!