TPMS vs stick gauge

[S550HPP]

Many hand gauges are up to 3-4psi off and it's usually published on the spec.
Many aftermarket TPMS are 3-4 psi off compared to a precision dial gauge.

My dial gauge certified to 1 psi accuracy and Ford Performance TPMS are perfectly aligned.

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[cerbomark]

I've liked this digital gauge I picked up from Lowe's. It has a silicone dome tip that seals a lot more easily and from multiple angles.

It has been within a couple PSI of the TPMS up or down 1psi due to rounding as mentioned previously.

I m not understanding you, the gauge is within a "couple of psi" from the tpms? Or within 1 psi? Thanks.

 

[Grimmer]

The TPMS value is lower by 2psi +/- 1psi depending whether or not it rounded up down or (or not at all).

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