These original GM C6 Corvette Tire Pressure Sensors, with built-in valve stem, delivers real time tire pressure information to the driver. When a tire is losing pressure, the C6 Corvette Tire Pressure Monitoring System provides an early warning. Properly working C6 Corvette Tire Pressure Sensors are especially important with the extended mobility tires that come standard on the C6. EMT tires are great but as a driver you can't tell when they lose pressure or "Run Flat" unless the TPMS system alerts you. Stay Fast, Stay Safe!