Tire Temp

[Displaced2]

What is optimal tire temp 10 degree difference between right and left rear. Tire pressure equal.
Only for about 10 miles than return to same.

[jadatis]

Strange that its first different but later the same.

Different temperature inside the tire, what you see on your TPMS , can be because of different load on R and L.
But that would not explain that it gets the same in the long run.
Mayby its because of the hot air from the exaustion pipe ( good word ???) that heatens one tire . Then at the long run the other gets the same by the more heat generated by more deflection because the load is higher there.
So yust some things to considder.

Normal inside tire temperature when driven for a while is about 112 degrees F/45dgr C. That is for passenger car tires, but probably also for LT . For ST it will get higher because of the more deflection such a tire has.
The heat is generated by the about 15 times a second deflecting an flexing back of every section of the sidewall. So more deflection generates more heat.
When braking or when one wheel stucks in some way, there is heat generated that is transported trough the rimms to the tires inside. It can rise the inside tire temperature to even 100dgr C/200dgrF? wich is boiling point of water.
The valves and the tires can stand this heat and the pressure rising that goes with it.
Can also be as simple as a little disfunction of one sensor.

[sail2liv]

Temps are always higher on sunny side of vehicle....even when traveling....

[youroo]

Originally Posted by sail2liv

Temps are always higher on sunny side of vehicle....even when traveling....

Rite answer Youroo!!

[Displaced2]

Thanks everyone. Temp never exceeded 90 degrees and only for short period of time then dropped to 81, matching drivers side, for rest of trip

[rockwood06]

When the temp go's up air pressure go's up and the opposite happens when the temp drops, air pressure drops.
Tires can increase up to. 4 lbs from a cold pressure setting after 1 mile of traveling over 25 mph.
Tires also have a temp rating, this info is all on line including the use of nitrogen.

[Displaced2]

Thank you. Will research more.

[OldCoot]

From the TST TPMS manual: "What should I set my parameters at? We recommend you set the parameters at 15% above and 10% below what you typically run in your tires, a recommendation based on the settings Truck System Technologies believes to be the safe zone. As for temperature, the monitors are preset at 157° F, a safe setting for all tires, which typically fail between 180°-200° F."