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SESK: Stuff Everyone Should Know · sesk.info/dad-tpms-not-substitute

Can the tire pressure warning light replace checking your tires with a gauge?

No, it only warns when a tire is significantly low.

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  1. Yes, it warns at the first small drop
  2. No, it only warns when a tire is significantly low ✔
  3. Yes, it shows exact pressure in every tire

Why: NHTSA says TPMS only activates a warning when a tire is significantly underinflated. It is not a substitute for regular tire maintenance, so keep using a gauge.

Huh, didn't know that: NHTSA lists irregular wear as a sign of damage from underinflation or overloading.

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References

Answer: No, it only warns when a tire is significantly low. NHTSA says TPMS only activates a warning when a tire is significantly underinflated. It is not a substitute for regular tire maintenance, so keep using a gauge.

  1. NHTSA: Tires www.nhtsa.gov/vehicle-safety/tires
    The TPMS is not intended to be a substitute for regular tire maintenance.
    Checked 2026-10-10.

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