Tire-pressure gauge
A tire-pressure gauge, or tyre-pressure gauge, is a
Since tires are rated for specific loads at certain pressure, it is important to keep the pressure of the tire at the optimal amount. The precision of a typical mechanical gauge as shown is ±3 psi (21 kPa
Tire-pressure monitoring systems
Many modern cars now come with built-in tire
Regulations on tire pressure
Since September 2007 all new automobiles below 10,000 lb (4,500 kg) in weight sold in the United States are required to incorporate a Tire Pressure Monitoring System, which is capable of monitoring all four tires and simultaneously reporting under-inflation of 25 percent of cold placard pressures in any combination of all four tires. TPMS known as Direct TPMS are capable of TREAD Act legislation requiring simultaneous pressure measurement for each tire pressure.[2]
References
- ^ "TPMS Fitment and Tyres Inflation Pressures" (PDF). UNECE. 12 February 2018. Retrieved 2020-04-09.
- ^ http://www.nhtsa.dot.gov/cars/testing/ncap/Tyres/pages/TPandLoading.htm[permanent dead link]