TPMS - How accurate?
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Intermediate
Joined: Sep 2007
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From: Evergreen CO
TPMS - How accurate?
I have a 2008 base model coupe. Since the car was new, the TPMS has always read about 2 psi low cold, with the error being about the same for all four wheels. The dealer seems to think that this is within normal tolerances. Is this true?
Safety Car
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From: F'burg VA
St. Jude Donor '13 thru '20,'22,'24 thru '26
If it is the first, then put some air in. If the second, I don't know - mine read the same.
Race Director
Joined: Mar 2005
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From: Austin Texas
Both the OEM TPS and the replacements on my '05 read 2#'s low compared to a good mechanical or digital gauge, my OEM TPS on the '08 are exactly the same, 2#'s low. I'm at 550 feet elevation.
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Racer
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From: Colorado Springs Colorado
Mine consistantly read 2 lbs lower than what the tire guage reads, I have yet to see any G.M. vehicle have the same readings, tire and DIC. Never thought about it but the elevation could be the cause.
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From: SW Florida
2021 C6 of the Year Finalist - Modified
I have a 2011 GS
I checked my tires with a very accurate [and expensive] digital guage a friend of mine owns ... and the tire guage read the same tire pressure that the TPMS sensors report to the DIC.
So, I am convinced that in the 2010 model years and later, the DIC is telling you the truth.
... As long as everything thing is working properly.
I checked my tires with a very accurate [and expensive] digital guage a friend of mine owns ... and the tire guage read the same tire pressure that the TPMS sensors report to the DIC.
So, I am convinced that in the 2010 model years and later, the DIC is telling you the truth.
... As long as everything thing is working properly.
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From: Houston Texas
Pro
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PSI is PSI, and the TPMS should read the same as a manual gage as long as you're comparing them at the same time, at the same elevation.
As far as correlating them, I find the TPMS to be accurate to 1 psi or so.
I'm on the other extreme, as ambient and road temps impact tire pressures considerably when it's 110 ambient and the asphalt is 140
As far as correlating them, I find the TPMS to be accurate to 1 psi or so.
I'm on the other extreme, as ambient and road temps impact tire pressures considerably when it's 110 ambient and the asphalt is 140
Race Director
Joined: Aug 2010
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From: Houston TX
I'm also **** about checking the tire pressures. Always try to run with Wolfdog's recommendation when cold:
32 psi front & 30 psi rear ...
I have an inexpensive analog small-diameter gauge, which consistently reads 1 psi lower than the TPMS at all times.
But it's more consistent than a pencil-type gauge. Guess I should buy a better gauge; any suggestions ?
32 psi front & 30 psi rear ...
I have an inexpensive analog small-diameter gauge, which consistently reads 1 psi lower than the TPMS at all times.
But it's more consistent than a pencil-type gauge. Guess I should buy a better gauge; any suggestions ?
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