Tire Pressure Question

Effy wrote:

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.

Yep, I've heard other TPMS owners say the same thing. They will ignore the low tire pressure warning on a cold morning because they claim that the pressure will increase as soon as they drive several miles so why put any air in. The funny thing is that I have never heard of any tire manufacturer say this. Of course ALL of the TPMS sensors are 100% accurate and the pressures given by them is always 100% correct.
I had a TPMS system and even tho I inflate my tires in pairs, with a system that connects two tires together to exactly balance out their pressure, the TPMS system would show a 2-4 psi difference. Basically the TPMS systems that I have seen are not very accurate and that is why I no longer use them. I've found that the US made Milton tire gauges are accurate to 1% and by checking each morning I have avoided all tire problems in many years of RVing. No unusual tire wear and not blowouts. I just drove from FL to MD over the Holidays and I came no where close to a 60 degree swing in one day of traveling. In the TWO days that it took me to make the 900+ mile distance. I did adjust my tire pressure at our stop midway during the trip.