Home What is TPMS? FAQ
What is TPMS?


Tires are crucial for vehicle performance. Under-inflated tires gradually degrades its structural integrity, affecting driving performance and compromising safety. Research from the National Highway Traffic Safety Administration (NHTSA) estimates that approximately 11,000 vehicle accidents were caused by tire failure.

A majority of drivers fail to regularly check the air pressure on their tires. Legislation in the U.S. now requires the installation of TPMS technology in 2008 model year vehicles and above. The NHTSA estimates fatalities and injuries related to tire failure will drastically reduce with the new law.

  • What is TPMS?

    A tire pressure monitoring system (TPMS) uses sensors located in each tire to monitor its air pressure in real time. A warning light on the instrument panel turns on to warn drivers when tires reach 25% below the recommended air pressure.

  • What does it mean if the warning indicator illuminates?

    The warning lamp is designed to illuminate when at least one tire is below the accepted air pressure for the vehicle. The tires should be checked immediately. The warning indicator will turn off once the tires are inflated to the proper psi.

  • Can the TPMS system be circumvented?

    No, the passing of the TREAD Act in the fall of 2000 implemented new safety mandates manufacturers to equip new vehicles with a TPMS that:
    ‧Monitors air pressure in all four tires
    ‧Alerts drivers when tires are under-inflated by 25% or more
    ‧Warns drivers of a system malfunction
    ‧Has a warning light which stays on until tires are inflated to the proper pressure
    ‧Has a "bulb check" on the instrument panel of the warning light when the ignition is on

    Under 49 U.S.C. 30122(b), "A manufacturer, distributor, dealer or motor vehicle repair business may not knowingly make inoperative any part of a device or element of design installed on or in a motor vehicle or motor vehicle equipment in compliance with an applicable motor vehicle safety standard."

  • Which vehicles are required to have TPMS technology?

    The U.S. federal government mandated TPMS implementation with the following phased rollout:

    ‧20% of new vehicles from October 2005 to August 2006
    ‧70% of new vehicles from September 2006 to August 2007
    ‧100% of new vehicles from September 2007

    All new motor vehicles under 10,000 pounds from 2008 model year and above are now required by law to have TPMS equipped according to the TREAD Act.

  • How does TPMS affect safety?

    national survey done by the Rubber Manufacturers Association (RMA) found that one six drivers in the U.S. regularly check the air pressure on their tires. Under-inflated tires compromise handling and lead to increased tread wear, putting vehicles at a significantly higher risk of being involved in an accident.

    The NHTSA estimates the implementation of TPMS for all new vehicles required by the TREAD Act to reduce the number of fatalities and injuries that occur annually related to tire failure.

  • How does tire pressure affect fuel efficiency?

    According to the U.S. Department of Energy, properly inflated tires can improve fuel efficiency by as much as 3.3 percent. This contributes to better gas mileage and reduces carbon emissions released into the atmosphere.