Originally Posted By: otis24
For every 10 degree drop in outside temperature, you lose one pound of tire pressure. I've heard it stated that filling the tires with nitrogen will negate that.
The 1 psi per 10 degrees F is a pretty good approximation. Pure nitrogen, the 93% or so stuff used to fill tires, or the 78% nitrogen/21% oxygen we breathe in the atmosphere all behave the same ... P1V1/T1=P2V2/T2, the "ideal" gas law simplification applies to most gasses.
Whether or not "nitrogen" inflation has ANY advantage with automobile use is addressed often in many groups. I believe I'm part of the vast informed majority who feel that almost all of its supposed advantage is that it tends to be dry.
For every 10 degree drop in outside temperature, you lose one pound of tire pressure. I've heard it stated that filling the tires with nitrogen will negate that.
The 1 psi per 10 degrees F is a pretty good approximation. Pure nitrogen, the 93% or so stuff used to fill tires, or the 78% nitrogen/21% oxygen we breathe in the atmosphere all behave the same ... P1V1/T1=P2V2/T2, the "ideal" gas law simplification applies to most gasses.
Whether or not "nitrogen" inflation has ANY advantage with automobile use is addressed often in many groups. I believe I'm part of the vast informed majority who feel that almost all of its supposed advantage is that it tends to be dry.