Ray - "where I got those numbers" was from Prevost's online technical manuals in the "Wheels, Hubs, & Tires" section. I wasn't saying that they were appropriate for my/our application - in fact, the reason I posted that info was to highlight the wide range of inflation/load numbers out there which add to the confusion of "what's right" for idiots like me!
Mike, thanks for the clarification. Only thing I can think of is that was for an empty shell. By the time the converter is done with it, it is a BUNCH heavier. Read, use and trust the tire charts and you will be fine. No single set of values is going to be always right for all of these coaches. No way ....

Ray