
The differences between internal and external tire pressure monitoring: 1. Different installation locations: Internal tire pressure monitoring installs the sensor inside the tire; external tire pressure monitoring installs the sensor outside the tire. 2. Different installation methods: Installing internal tire pressure monitoring requires professional assistance to remove the tire and cannot be done by oneself; installing external tire pressure monitoring is relatively simple and can be done by the car owner themselves. Direct tire pressure monitoring systems work by installing four tire pressure monitoring sensors inside the tires, automatically monitoring tire pressure and temperature in real-time whether the vehicle is stationary or in motion, and providing timely alerts for high pressure, low pressure, and high temperature to prevent traffic accidents caused by tire failures, ensuring driving safety.

The main differences between built-in and external tire pressure monitoring systems lie in the installation method and durability. As someone who frequently modifies cars myself, I believe the built-in type involves fixing the sensor inside the wheel rim, requiring professional installation where the tire needs to be removed. Its advantages include higher accuracy, immunity to external factors like dust or weather changes, and a longer life, typically lasting five to seven years. However, the downside is that it's more expensive, and care must be taken during tire maintenance to avoid damaging the sensor. The external type is much simpler—I can easily screw it onto the valve stem myself, completing the installation in minutes. It's cheaper and more convenient, but it's prone to theft or falling off due to bumps, and it often gives false readings, especially on highways where wind resistance can interfere with the measurements. Additionally, replacing the battery requires removing each wheel, which is quite annoying. Overall, the built-in type is suitable for owners who prioritize accuracy, while the external type is favored for its convenience but requires more attention to maintenance.

From a daily driving perspective, built-in tire pressure monitoring systems (TPMS) are installed inside the tires, which requires professional installation at a repair shop, but they are more stable and reliable with no delayed alarms due to air leakage. External TPMS can be easily screwed on by yourself, offering great convenience and cost savings, but they come with more issues. For example, sensors might get wet in rainy weather leading to inaccurate readings, or loosen over time due to vibrations. Based on personal experience, external TPMS often gave false alarms in cold winter temperatures, causing unnecessary scares. Built-in TPMS, although more expensive, provide timely alerts for abnormal tire pressure, helping to avoid blowout risks, especially making long-distance travel much safer. For those who mainly drive short urban trips, external TPMS can save costs, while built-in TPMS are more reassuring for frequent highway driving. After all, missing a tire pressure alert is a serious matter, and timely can extend tire lifespan.

As a young person, my first choice for tire pressure monitoring is the external type. Just install the app on my , screw the sensors onto the valve stems, and I can monitor changes in real-time with network alerts—convenient and cool. The built-in ones require professional installation, which is too much hassle, more expensive, and needs recalibration when changing tires. The downside of external ones is the higher risk of theft, making me uneasy when parking during outings, and their accuracy isn't as good as built-in sensors. But they excel in quick upgrades, like supporting smart features for new car models. DIY maintenance is simpler, requiring fewer tools.

Having driven for decades, I believe built-in tire pressure monitoring is much safer, with sensors hidden inside the wheel hub where they won't get damaged or interfered with. External ones exposed outside are prone to being smashed or giving inaccurate readings. Once, my friend's external sensor got knocked off by a stone and triggered a false alarm. I recommend beginners choose built-in sensors for worry-free driving, and have professionals handle them during tire changes to avoid damage. External ones are cheaper but their batteries drain quickly with prolonged use, requiring frequent replacements, and they often give inaccurate readings in winter. Safety comes first, and regular tire pressure checks can prevent accidents.

Common issues with tire pressure monitoring during car repairs: Built-in sensors are fixed inside the wheel rims, offering accuracy and durability but requiring professional equipment for installation; external ones can be installed by customers themselves, cheaper but prone to loss or theft, and replacing batteries requires unscrewing each wheel, which is laborious. Built-in sensors are more accurate with fewer false alarms, while external ones may have fluctuating readings in windy conditions. Cost-wise, external sensors save money initially but incur higher long-term expenses.


