TPMS Reading Not Accurate

[EbyCreek]

Mine are about 2 PSI low on TPMS from three different mechanical gauges. It sucks because I have to keep 39 PSI to keep the stupid nanny form scolding me.

If you get a Tazer you can drop the TPMS pressure down to as low as 25 psi.

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[JohnT]

Good one @JohnT, 3 years and two weeks since last post. I get that some people think that checking tire pressure is a loathsome chore, but it isn't. We can make a quick visual every time we approach the vehicle and then a kick test if needed. Yeah, yeah, I know that's not modern day state of the art but it has worked for decades.

I agree with all you say but... Still doesn't answer the question. My understanding is - you don't know either. Welcome to the club.