Tire Pressure for G Rated Tires

If your goal is to give yourself the greatest payload capacity (margin of surplus capacity) then you should air at 110. This gives you the max capacity of the tire...hence the greatest margin of safety.


I have never understood upgrading a tire and then downgrading its capacity by decreasing air pressure...not on a heavy fifth wheel anyway. There are too many unpredictable road forces at play. My 2 cents worth...