Tire Pressure Question
This question has probably been asked before but upon searching I couldn't find anything. When traveling from a northern state where the temperature is well below freezing to an southern state whe...
Forum Discussion
rgatijnet1 wrote:CapriRacer wrote:
The alternative is to constantly adjust the pressures as the ambient temperature changes. That's a lot of work and requires a lot of math.
If you check your pressure each day before you drive on your tires there is no math involved. Your tire gauge will read the correct pressure and automatically adjust for the ambient temperature. 100psi at 30 degrees with your gauge is correct at that location as is 100 psi with your gauge at 90 degrees in a warmer location.
All of the manufacturers warn you about adjusting the tire pressure on warm tires.
By this logic, if I drive from MD to FL in one day, I leave at 30 Deg and arrive at 90, my tires would be very over inflated. I adjust before the return trip and now I am way under inflated by the time I get home - except I am not. This is why tires can withstand a very wide range of tolerances in both psi and temp. Because constantly adjusting them is unrealistic and frankly uncalled for. Check cold and adjust before you leave for a trip then let the tires do what they do. Owning a TPMS for about a year, warm to cold climate or vice versa, I haven't seen any dramatic swing one way or another. Once they heat up they stabilize.
