TPMS Accuracy Question

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Oct 11, 2017 | 12:26 PM

Charlie from Cherry Hill

Thread Starter

Burning Brakes

Joined: Oct 2001

Posts: 1,154

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From: C.H., N.J.

TPMS Accuracy Question

I keep close tabs on the PSI in our tires. C6, wife's Chevy and my Buick all have TPMS that are a couple of PSI less than my tire gauges read. I use a recently purchased digital gauge and also have an older analog dial gauge. The DIC always shows a different PSI on each vehicle than that of my gauges. Is this common? Dealer says the TPMS is very accurate (+/- 0.5). Your thoughts please.

Oct 11, 2017 | 01:13 PM

nuke61

Drifting

Joined: Jun 2004

Posts: 1,627

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From: Goodyear Az

Johnson Controls makes a large number of TMPS senders, and they say it's + or - 1 psi.

Oct 11, 2017 | 04:28 PM

Tonylmiller

Race Director

Joined: Apr 2006

Posts: 12,914

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From: Huntsville AL

Mine have always been 1 or 2 psi off. Good enough to tell if there is a problem but if you want accuracy just use a good gauge on cold tires.

Oct 11, 2017 | 09:38 PM

Charlie from Cherry Hill

Thread Starter

Burning Brakes

Joined: Oct 2001

Posts: 1,154

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From: C.H., N.J.

Quote:

Originally Posted by nuke61

Johnson Controls makes a large number of TMPS senders, and they say it's + or - 1 psi.

Quote:

Originally Posted by Tonylmiller

Mine have always been 1 or 2 psi off. Good enough to tell if there is a problem but if you want accuracy just use a good gauge on cold tires.

Thanks guys. Looks like I'm okay using my tire gauge to fill the tire and the TPMS as a backup warning.

Oct 11, 2017 | 10:57 PM

cclive

Team Owner

Joined: Mar 2008

Posts: 21,502

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From: Southern Utah

Quote:

Originally Posted by Honey Badger

Thanks guys. Looks like I'm okay using my tire gauge to fill the tire and the TPMS as a backup warning.

Exactly as the system is designed

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