Quote:
Originally Posted by Bostongone
CWtheMan, thanks for the information. I might have guessed at maybe 5 to 6 inch range but out to 7 is interesting. What do you think about running them at full 65 psi or would running them at 60 psi be acceptable since folks are always airing their tow vehicle down from 80 psi to 60 psi when not towing?
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You will have to first verify the pressure ratings of the wheel and it's valve stem.
It's best to just change the valve stems to metal. They are normally recommended for all RV trailer applications.
Some wheels have PSI ratings and some do not. The safest way to verify those without any markings for PSI is to call the manufacturer and provide them with the wheel PN & MN. The safety warning the tire industry gives is; "never exceed a wheel's PSI rating". Like tires, that's a recommended cold PSI.
NOTE: Many of the trailer industry OEM providers have easily found links on-line. In the links they normally have the specs for all the wheels they provide to the RV trailer industry.
Here is a link to a large OEM provider of RV trailer wheels/tires.
http://lionsheadtireandwheel.com/Wheels
Here is another link to a very sturdy steel valve stem.
https://www.etrailer.com/s.aspx?qry=...s_and_Wheels#/
Most tire retailers don't have steel valve stems on hand. Automotive parts stores do. They will also carry replacement cores. I keep those in my tool box. Very handy to have a couple on hand. Sometimes when checking your air pressure one will not seal properly or it's just worn out.