We just got michelin xze tires. The tireman wanted to put the max air in them , 110psi I think. But our experience is that hard tires rattle the mh on the bumpy main roads like the i5. So we said 9...
Click here to view a document from Michelin that will explain in great detail how to determine the proper tire inflation for your specific tire and the specific weight of your RV.
Hope this helps.
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