Originally Posted by Iggy
I may try 85 psi first for a few days and see how that feels.
If it still hard riding I will take it down to 80 psi.
I'm presently at 1,000 ft above sea level and plan to drive up to Yellowstone that is higher and cold air pressure should decrease up there.
You need to be sure your cold inflation pressure is always sufficient to support the measured
load on the heavier end
of each axle
. If not, you can be doing permanent damage to the tires.
Do not adjust inflation on the "look" of a tire or "thumping" it or the "feel" of a sidewall.
Cold inflation means not being driven on or in direct sunlight for at least two hours. Be sure your digital tire gauge is accurate to better than +/- 3psi from a master gauge such as one used by your tire dealer. You do not need to worry about adjusting for elevation or changes in ambient temperature as long as you meet the minimum inflation level at the start of each travel day
A TPMS is the best way to monitor tire inflation. Just checking each day does not work any better than checking the oil or water in your engine. That's one reason you have gauges on your instrument panel is because things happen as you drive down the road.
You might also want to read THIS
post on tire failure.
I write a blog on RV tire application and safety. RVTireSafety.com
Also give seminars on tires at RV events across the US. 40 years experience as tire design & quality engineer for major tire mfg. Freelander 23QB on Chevy chassis is my RV