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TPMS which do you believe?
| 11-24-2017, 04:02 PM | #1 |
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TPMS which do you believe?
I have a few tire pressure gauges and all of them read 3 or 4 lbs higher than my TPMS shows. Has anyone else noticed this?
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| 11-24-2017, 04:06 PM | #2 |
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Yep and I will always continue to trust my 20+ year old 'manual' gauge
 The TPMS to me is just a ballpark.
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Originally Posted by jmg
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| 11-24-2017, 04:19 PM | #3 | |
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Quote:
TPMS are only concerned about any change in pressure so they don't really care if they display the correct pressure or not, just the difference from where they were set and what they are currently reading.
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| 11-24-2017, 04:49 PM | #4 |
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Mine read within about a half pound of what I measure. At any rate, fill the tires to what you prefer, using your gauge, then do the re-calibration procedure. You'll get a warning message if the pressure drops by about 3PSI from that.
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| 11-24-2017, 09:47 PM | #5 |
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chalk test. also if you are rolling onto the side wall check your pressure
https://itstillruns.com/chalk-tires-6948382.html |
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| 11-25-2017, 09:52 AM | #6 |
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Thanks and I am in agreement with all the comments and will trust my own gauge. I think this is another CYA for the manufacturers so no one under-inflates their tires.
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| 11-25-2017, 10:15 AM | #7 |
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It's not a manufacturer CYA, it's a governmental regulation. Contrary to popular belief it isn't a fuel economy measure, it's a safety measure, adopted in the US after the Firestone debacle in the 1990s. At least 271 people died in the US as a result of tread separation, which was traced back in part to under-inflation.
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