Within 6 hours pf stopping travel the temperature of tires will decrease to ambient or close enough. Doesn't matter what the ambient pressure is as long as you don't exceed the max pressure on the tire and do not go below the minimum you have figured based on your loading. That means as you go up in altitude you may need to lower the tire pressure to ambient (temperature and pressure altitude). Coming back down the mountain you may need to add some air. As it gets colder, you will have to add air and let a little out in the heat. It is the volume of air in the tire that holds the coach up not the sidewall of the tire. The object is to keep as little air as is safe in the tire to soften the ride and promote even tire wear. If you are traveling, then is is best to check the engine oil and the tire pressure every morning. If you are not moving, then who cares what the oil level is in the engine or the pressure in the tires (unless the tire is going flat).
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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