If you run the G614 tire at 95 psi, the load capacity will be 3415 lbs per tire, which will not quite make the most of your 7,000 lb axle. The Goodyear inflation chart is available at
http://www.goodyearrvtires.com/tire-...n-loading.aspx
You go to Tire Inflation& Loading, and there is a button that will take you to the charts. When you find the LT235/85R16, follow the chart to the right where you get to the G range pressures. At 110 psi, the tire is rated the full 3750 lbs capacity.