TPMS reading high

[Riverjunkie]

I have a 2020 Rubicon that I bought used with 35’s on it. Well actually 315/70 R17 BFG KO2’s which are 34.4” in diameter. Apparently it hasn't been recalibrated.

The speedometer is obviously off. I did some research here and ordered a Tazer to fix that etc.

My tire pressures seem to be off by 4 or 5 lbs between what is shown on the dash and what I get at the wheel (The dash shows them higher). It wasn’t clear to me from what I read whether that is related to the tire size change or not.

Thoughts?

Thanks!

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[briscoelab]

My 2020 JT and my 2021 JL both show higher on the dash than multiple gauges at the tire. This includes both analog gauges and my digital ARB inflator. I'm also off in the 3-4# range.

Think of it as a *feature*, being able to air down more without activating the TPMS lights

 

[Riverjunkie]

My 2020 JT and my 2021 JL both show higher on the dash than multiple gauges at the tire. This includes both analog gauges and my digital ARB inflator. I'm also off in the 3-4# range.

Think of it as a *feature*, being able to air down more without activating the TPMS lights

Roger that…thanks for the info. ?

 

[XraytecH]

My 2020 JT and my 2021 JL both show higher on the dash than multiple gauges at the tire. This includes both analog gauges and my digital ARB inflator. I'm also off in the 3-4# range.

Think of it as a *feature*, being able to air down more without activating the TPMS lights

Same

My JT also reads 2-3lbs higher compared to an inflator gauge.

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