What year and chassis builder?
I used to carry 90 psi in both the motorhomes I had that were on Chevrolet P 30 chassis. These had conventional A arms and coils springs in the front with air bags in the springs.
I once made a 1000 mile trip with deflated airbags (they had gone bad) and ruined 2 nearly new Michelins. The coach handled like a box of dirt as well. Expensive lesson learned.