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TPMS Accuracy: Sensors report 1 PSI lower than gauge
| 09-19-2016, 12:32 PM | #1 |
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Lieutenant General
 
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TPMS Accuracy: Sensors report 1 PSI lower than gauge
After delivery of my 2017 BMW 440i Gran Coupe, I adjusted tire pressure in the morning according to recommended specifications: 33 PSI front, 38 PSI rear. Used two different gauges to verify tire pressure.
Shortly after leaving the house, I checked tire pressure via TPMS. 32 PSI front, 37 PSI rear. At least all four sensors report the same delta: -1 PSI. I suspect TPMS sensors report slightly lower PSI. Again - I used two different gauges to verify tire pressure on a cold morning. Any similar experiences? |
| 09-20-2016, 12:19 AM | #3 |
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Captain
 
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1psi? really? lol
what are your gauges accurate to? when were they last calibrated?
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