Is Indirect Tire Pressure Monitoring Useful?

[DiWeston]

Indirect tire pressure monitoring is not very practical because the indirect system is relatively low-cost, less accurate than direct systems, cannot pinpoint the faulty tire, and the system calibration is extremely complex. It cannot directly measure specific values, making it less intuitive. The working principle of indirect tire pressure monitoring is as follows: 1. When the air pressure in a tire decreases, the vehicle's weight causes the rolling radius of that wheel to become smaller, resulting in a faster rotation speed compared to other wheels. 2. By comparing the differences in rotation speeds between tires, it monitors tire pressure. 3. The indirect tire pressure warning system essentially relies on calculating the rolling radius of the tires to monitor air pressure.