Originally Posted by Dr4Film
The only gauge your should totally rely on is your calibrated psi tire gauge. Most people don't ever take the time to compare their gauge to a calibrated one which they should do once per year or whenever any damage has happen to your gauge.
PSI and TEMP accuracy is not as important as how each tire is performing under the driving conditions you are currently driving in at the time. That's why it is vitally important to have your low & high psi aims set correctly and also your high temp aim set correctly.
It would be cost prohibitive to have calibrated PSI and TEMP sensors for your TPMS. Trust me you could not afford one. But you can afford to go to your local tire shop and have your favorite tire psi gauge calibrated.
Dr4Film ----- Richard
That is sound advice, it's the delta pressure I worry about the most.
Richard, what type of Tire Pressure Gauge are you using that can be calibrated?
And what setting do you use for TPMS Alarms, I'm set now at minus 10% and Plus 15%, I do end up getting a lot of alarms when the temperature is low.