Tire pressure fluctuation when hot
Via my tire pressure monitor kit, I noticed that my tire pressures in all 6 tires increased uniformly by as much as 18psi from cold pressure on a long trip thru the desert. Is this normal? I drive...
Forum Discussion
Old-Biscuit wrote:
...... Thanks for pointing out 1 psi per 10*F increase....that is the 'standard' on charts.
To increase 18 psi the temp would have had to change 180*F :H
:S:S:S ........
Except that the 1 psi for every 10 degrees F is for passenger car tires that operate at about 30 psi. If you are operating a tire at 60 psi, then the change is doubled.
To get around this, think in terms of percent - 3% for every 10 degrees.
