Originally Posted by Too Tall
That's some good info Airdale, thanks for post the pdf.
Has anyone seen a tire mfg state the temperature at which they call the cold temp?
Cold temp is ambient temperature. It means the tire has to cool from its rolling temperature for hours - I like to allow 8 hours minimum out of the sun (overnight). Or I add 3lbs to the pressure I put in the tire if I'm doing it while the tires are hot.
It's at best an approximate science. 40 PSI on my tires in Denver turns into 35 PSI on my tires in Lincoln, Nebraska at the same temp.
Likewise, placard pressure in my tires on a 75 degree day will trip the TPMS if the next early AM is down to 10 degrees. Rule of thumb in Colorado upon seeing a TPMS light is to assume you do NOT have a problem unless there is visual/audio evidence the tire is going flat. At first opportunity, fill the tire(s) to normal pressure and continue to observe.
I try to set my camper tires to sidewall max pressure with normal conditions. If temps are going to be significantly lower, or I am going to the lowlands, I will add another 3#. If going to higher altitude or temps are going up, I just let it ride for a slight over pressure.
As somebody else said, you don't need to overthink this. Air to sidewall max pressure, call it good, and go camping.
2014 Rockwood A122 A-frame
2008 Hyundai Entourage minivan