Until you weigh and consult a chart, I would set them around 85-90psi. In my 2014 Challenger the sticker with all the GVWR and tire info is down low on the left side of drivers seat. Mine states a GVWR of 22,000 and cold psi of 90. Tires stamped at cold max psi of 110 if I recall correctly.
I still need to run mine across the scales. While doing the next leg of our trip I'll fuel up at a Flying J and then pay my $10 and run it across.
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Full Time in 2017 Newmar Ventana 4369
pulling a 24' enclosed (Mini Cooper/Harley/Kayak)
(traded 2014 Thor Challenger)
US Army 70-73 Retired LEO
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