A flashing tire light, whether the tire pressure light or the TPMS light, generally signifies a more urgent issue with your tires or the TPMS system. It could indicate significantly low tire pressure, a sudden loss of pressure, or a fault in the TPMS sensors. When the tire light flashes, it's important to manually check your tire pressures, inflate any underinflated tires, and inspect the TPMS system to diagnose and resolve the underlying problem.