Posted on 9/7/2018
TPMS Tire Pressure Monitoring System What is it? TPMS is a monitoring system that lets the driver know if they have a flat tire or if the tires are low on air. There are 2 types of TPMS. Direct TPMS- more expensive, more accurate, doesn’t have to be reset after filling the tire or replacing tires. Battery tends to last a decade. Once the battery goes they need to be replaced, about every 10 years. Indirect TPMS- counts rotation of tire against the other tires. Under-inflated tires need to rotate more to keep up. Does not use a pressure sensor. Has to be reset after filling tires. Not as accurate. Making a comeback as technology improves. If ALL tires are under inflated by the same amount the TPMS alert won’t be triggered. TPMS came about in the 1980s in European luxury cars and became mandatory in the United States in 2009 for light passenger cars. The thought was that it would decrease the amount of accidents due to poor tire care and pressure. All cars 2007 or newer ... read more