What does pressure loss in the left rear tire mean?

[DiGage]

If your vehicle displays a warning for pressure loss in the left rear tire, it indicates abnormal tire pressure in that tire, requiring calibration. Only vehicles equipped with a tire pressure monitoring system (TPMS) will provide this alert. TPMS can promptly reflect tire conditions, eliminate safety hazards, and extend tire lifespan. Here’s an introduction to tire pressure monitoring: 1. Tire pressure monitoring can be categorized into two types: direct and indirect. Direct systems are more expensive but offer more accurate monitoring results. Direct tire pressure monitoring, abbreviated as PSB, uses sensors installed inside the tires to measure tire pressure. The data is then transmitted to the dashboard via wireless transmitters. If the tire pressure is too low or too high, the system will automatically issue an alarm and display the pressure value. Although direct TPMS is costlier, it provides higher precision. 2. Indirect tire pressure monitoring, abbreviated as WSB, achieves monitoring by comparing differences in tire rotation speeds. When tire pressure decreases, the rolling radius of the tire becomes smaller, causing its rotation speed to increase relative to other tires. The drawback is that the monitoring results are less accurate, but the cost is relatively lower. 3. According to the international standard GBT2978-2008, the recommended tire pressure for standard tires is 2.4-2.5 bar, while reinforced tires have a recommended pressure of 2.8-2.9 bar. The maximum pressure should not exceed 3.5 bar.