First, weigh the unit to determine how much weight is on the front axle.
Second, use the Internet to locate a chart for your tire size that shows how much air pressure is needed to carry that load. Adjust front tire pressure to that on the chart for your weight.
Do not use max tire pressure as shown on tire and don’t use whatever is posted on the RV.
Doing this made a huge, welcome difference in how our class c drove. I had to lower the front tire pressure by 20#’s, and was well within safe load capacity for the tires.
Tom & Renée
2015 Wildcat 295RSX
2018 Ford F-350, 4x4, Diesel, CC, Long Bed