just had all new tires on our Jayco Seneca 35 GSwhat is a good tire pressure for a summer travelingthey are new tires and its a 2007
I would have it weighed and adjust the pressure accordingly. When we had our 08 it had Load range H tires and after weighing, I could safely run 90 lbs in the rear and 85 in the front. I also had KONI shocks and it rode and drove great.
Here's Micehlin's pressure chart, just click on the 19.5 and then look at which tire size you have.