When I bought my rig in 2017 the tires looked nearly new and had (as I remember - and my remembering isn't great) 50 psi in all 6 tires. Then I checked the date code and the tires were 20 years old, so I promptly bought all new tires at "America's Tire" and they set them to 60 psi for the front tires (or was it the rear?) and 50 psi for the 4 rear tires (or is that backwards - doesn't matter).
Then I had it in the shop and they set all 6 tires to 32 psi and told me that the data sheet in the door frame said to use 28 psi. But the tires have a max pressure of 65 psi. Now, I had seen the 28 psi and noticed the old tires had a max of 65 psi when I bought the rig - but I figured the 28 psi was for the Toyota pickup without the cabin. It seemed weird to have the pressure set at less than half the rated max, so ~50 psi seemed reasonable.
Also at 32 psi the tires LOOK low, they bulge way out and the dualies must be touching in between.
Finally the manual (yes I have the original) says "Obtain proper inflation pressures from your vehicle chassis manufacturer OR tire manufacturer."
Any of you wise folks have a better idea of the best pressure for: handling first, mileage second, and tire life third??
Thanks in advance,
Worrier