[scottkeen]

I called my local trailer service center, "Trailer Care" in Hamilton, VA who sold and installed these tires 2 years ago and asked what PSI the head trailer mechanic says I should fill these tires to (they do all the service on my RV).

She went and checked with him and came back, "He said 100 PSI".

I checked my tires last weekend and they were 90-95 PSI so I topped them up to 105 PSI on my Viair inflator gauge, and my TST-507 TPMS read the tires as 98-99 PSI. Close enough to 100 PSI.