What is the difference between built-in and external tire pressure monitoring?
3 Answers
Tire pressure monitoring built-in vs. external differences: 1. Price: Built-in types are relatively more expensive than external types. 2. Installation method and time required: Installing built-in tire pressure monitoring takes more time and requires professional tire removal; external installation is relatively simpler. Tire pressure monitoring is generally divided into the following two types: 1. Direct tire pressure monitoring: Uses pressure sensors installed in each tire to directly measure tire pressure, and wireless transmitters to send pressure information from inside the tire to a central receiver module, which then displays the tire pressure data. When tire pressure is too low or there is a leak, the system automatically alerts. 2. Indirect tire pressure monitoring: When the pressure of a tire decreases, the vehicle's weight causes the rolling radius of that wheel to become smaller, making its rotation speed faster than other wheels.
I've driven quite a few cars. The built-in tire pressure monitoring sensors are hidden at the tire valve stem inside the tire, transmitting data to the dashboard display via wireless signals. The measurements are very accurate, unaffected by wind, rain, or bumpy roads, and they're durable but a hassle to install—you need to remove the tire and visit a professional shop. Changing the battery is also troublesome, costing at least a few hundred bucks. The external ones are straightforward: just screw the sensor onto the valve stem, and you can do it yourself in minutes. They're much cheaper, costing around a hundred yuan, but they're prone to falling off or getting stolen. The main differences lie in accuracy and durability. For long-distance trips or frequent off-roading, built-in sensors are absolutely worry-free and won't give false alarms about leaks. For city commuting, external ones are more convenient, but don't rely on them too much. From a tire maintenance perspective, built-in sensors help maintain even tire pressure, which can extend tire life.
As an average car owner, I've always prioritized driving safety, and the difference between built-in and external tire pressure monitoring systems is quite significant. The built-in type is more reliable, with sensors located inside the tires, providing far more accurate pressure readings without being affected by vibrations during driving. Especially in rainy or cold weather, it can promptly alert you to air leaks, preventing potential blowout risks. Installation requires tire removal, best handled by 4S shops—it costs more but ensures stability, with batteries lasting several years. The external type is simpler to use, purchased and installed by yourself at lower cost, making it suitable for beginners. However, since the sensor attaches to the valve stem, it might get thrown off during high-speed driving or damaged by car washes. The key differences lie in safety versus convenience: built-in systems offer stronger long-term protection, while external ones provide short-term practicality. Expanding to maintenance, built-in systems can integrate with smart driving features, helping save on fuel costs, making them worth considering.
