There are indeed some models on the market are equipped with TPMS function, and the TPMS technology they use is mainly two kinds.

1.Direct type (This technology is through the electronic tire pressure sensor transmitter installed in the tire, the real-time automatic monitoring of various tire pressure and tire temperature conditions, and the relevant information is transmitted wirelessly to the receiving host in the driver's room, in the case of abnormal alarms in time, can provide effective safety protection for driving.) .

2.Indirect type (that is, the ABS system assists the calculation of the speed difference of both tires, and compares it to get a warning that the tire pressure may be insufficient).

 

The difference between direct TPMS and indirect TPMS is still very obvious, the direct type can provide more advanced functions, at any time to determine the actual pressure inside each tire, it is easy to determine which wheel position the faulty tire is. Indirect models are relatively inexpensive, and cars already equipped with four-wheel ABS (one wheel speed sensor for each tire) only need to upgrade the software to roughly monitor the tire. However, the indirect type is not as accurate as the direct type, it cannot determine the failure of the tire at all, and the system calibration is extremely complex, in some cases the system will not work properly, such as the same axle when the two tire pressure is low at the same time, such as the speed of more than 100km/h.

Now direct TPMS is becoming more and more popular, while indirect TPMS will gradually be phased out due to more false positives. However, at present, many original automakers are still using indirect tire pressure monitoring methods in order to save costs, and it is necessary to install a direct TPMS. Finally, attach the TPMS equipment of some mainstream models, there are a large number of models are in the state of unmonitored tire pressure driving, for more protection of travel, it is recommended to install TPMS. Because it is safe, we can travel far!