didn't know the stk tpms system was so sophisticated. i thought i just an absolute pressure. again, thanks for the helpful and relavent info.
Originally Posted by daesimps
Remember that the TPMS gives a temperature calibrated reading. It compensates for the temperature of the air and gives you the what the pressure would be at 20 Degrees C (since these are the reference pressures/temperatures in the manual).
Your normal gauge will not do this and gives you the pressure of the tyres at the current temperature.