I have trailer air suspension on my rig. If it is the same thing you have (other than a different name) then it's 5 PSI per thousand lbs weight on the axles. Mine is still the single point inflation for both sides of the axle and I run at 80 PSI on my 38' rig. I scaled my rig loaded and the axles were supporting a bit over 14,000 lbs.
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Mike Nancy and the fuzzies
Fulltiming since June 2004
Volvo 660 MH tow vehicle
2005 MS 38RL
2007 Saturn Ion "toad"
2010 Gold Wing "piggyback"
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