Offer still stand as I wrote in my first reaction here.
So if you give the right data, I will calculate a pressure range in wich the tires are save and comfort and gripp are still acceptable.
Need from tires : maximum load or loadindex
Pressure needed for the maximum load /AT-pressure /maxloadpressure ( wich is not the maximum pressure of tire).
Speedcode of tire or maximum allowed speed.
And if they are ST tires , can all be found on sidewall.
From motorhome: GAWR's, GVWR ( gross axle/ vehicle weight rating).
But better would be seperate weighed wheel(pair) loads, second best axle loads.
Maximum speed you wont go over for even a minute in your use.
Configuration of motorhome, so number of tires front and behind.
Especially front mostly dont need high pressure , rear the 95 psi AT-pressure is mostly needed. And because driver and co-driver is mostly closer to front axle , bumping of front axle is felt .