IIRC, all tires have the maximum recommended tire pressure (COLD) and (most of the time) the load rating on the sidewall. That's where I look.
My trailer has the same size tires as
fiveaday's trailer. 50 PSI COLD is the max pressure listed and that's what I run them at. I want the most load capacity I can get with this heavy coach.
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Dave & Cindy
'99 Chevrolet 2500 ext. cab (2WD)
5.3 liter V8, 3.73LS, Prodigy, Hensley Arrow
2004 Sunline Solaris SE T-2499 #5527