New TPMS Sensors | The Best Choice With Your New Wheels & Tires
Tire Pressure Monitoring System sensors (TPMS sensors) are fitted in place on the inner surface of your wheel, inside your tire. Attached to that sensor is a valve stem that protrudes outside the tire for the purposes of adding air. A built-in pressure detector monitors tire inflation at all times when the vehicle's ignition is on. That pressure detector has its own battery and transmitter which relays information to the car's main computer. Vehicle control systems read input from all four tires, and will alert the driver via a warning light if the pressure in any one of them drops 25% or more below a pre-determined level. The idea is to give a driver an "early warning" if any tires are low, so that the tire pressures can be corrected.