You can use my made pressure/loadcapacity lists in next map on my one-drive.
Open the USA map and search for the AT-pressure given on sidewall, wich is not the maximum pressure of tire.
Then seach loadindex or lbs maximum load and round down to LI steps.
then search the loads you want the pressure for and look above or below for pressure needed.
Always take about 10% reserve to weighed loads.
Then still no bumping and maximum reserve for things like , pressure loss in time, unequall loading R/L, little more load then you think, etc.
the lists are made with even saver formula then the European lists ans sertanly saver then American lists for LT.
So the loadcapacity's are lower then american lists give, but my formula takes care that the deflection stays the same over the whole range, wich is also the goal of the calculations of tire-makers, but wich dont make that goal.