Understanding what does TPMS mean is essential for recognizing one of your vehicle’s most important safety systems. TPMS stands for Tire Pressure Monitoring System, designed to alert drivers to under-inflated tires that may affect braking, fuel economy, or stability. The system uses either direct sensors inside the wheels or indirect monitoring through wheel-speed data. When pressure becomes unsafe, the dashboard light turns on. Knowing what TPMS means helps drivers identify when to add air, inspect for leaks, or replace aging sensors. It’s a foundational part of modern vehicle safety and ensures consistent tire performance.