Is a built-in or external tire pressure monitoring device better?

[KingstonRose]

Both built-in and external types offer excellent safety. Below are the relevant introductions about built-in and external types: 1. Introduction one: The sensor lifespan of the built-in type is longer than that of the external type, but the battery of the built-in sensor is difficult to replace. 2. Introduction two: The accuracy of both built-in and external types is the same, but the installation of the built-in type is more troublesome. 3. Introduction three: The principle of the external sensor is to use a push pin to open the valve core, and the air pressure impact received by the sensor is the internal tire pressure. The sensor cleverly uses the thread of the fixed dust cap to secure it to the air valve. 4. Introduction four: Installed inside the tire, it uses a sensor-equipped air valve to replace the original one, with a minimal external part that does not protrude outside the wheel hub. Once installed, it is basically a one-time, permanent solution.

[SanAlexander]

I've been driving long distances for over 10 years and place great importance on vehicle safety features. I opt for built-in tire pressure monitoring systems because they're installed on the tire's valve stem inside, directly measuring pressure and temperature with extremely high accuracy and minimal error. When driving on highways, if tire pressure becomes unstable, it provides timely warnings to reduce the risk of blowouts, ensuring family safety. Although installation is a bit troublesome - requiring a repair shop to remove the tires and costing a few hundred yuan - once installed, it offers excellent sealing and strong anti-theft properties, making it impossible for thieves to tamper with. External ones screwed onto the valve stem are easily covered by dust or stolen, especially prone to false alarms on muddy roads during rain, making them unreliable. Their battery life is also shorter, while built-in ones can last five to six years without worries. In short, safety comes first - don't gamble with your life to save a few hundred yuan. Choosing built-in is absolutely worth it.

[OJourney]

I'm a lazy car owner who mainly uses the car for daily urban commuting. External tire pressure monitoring devices are more to my liking: I can install them myself by screwing them onto the valve stem in just a few minutes, saving the cost of hiring a professional. Buying a set online for a few hundred bucks is cheap and cost-effective. External sensors are flexible—if the battery dies or the sensor fails, replacing it is a breeze. Built-in sensors require tire removal for maintenance, which is troublesome and expensive, making them suitable for meticulous owners but not for someone like me who hates hassle. In terms of accuracy, external sensors aren’t far behind, and for city driving at low speeds, the data is sufficient. Sure, they can get dirty or stolen, but in well-monitored parking areas, this isn’t a big issue. Just remember to remove them when washing the car. For hassle-free and budget-friendly options, external sensors are the way to go.

[NovaDella]

I'm financially savvy when it comes to driving and saving money. Externally mounted tire pressure monitoring systems are clearly more economical: a basic set for four wheels can be purchased for just a few hundred yuan, while built-in systems start at over a thousand plus several hundred for installation, doubling the price. The accuracy of external systems is sufficient for daily use, with no issues for city driving under 60 kilometers. Although built-in systems are more precise and durable, the price difference is too large—better to save the money for fuel or maintenance. Installing an external system costs nothing, and maintenance is easy, with battery replacement costing just over ten yuan. Choosing it offers high cost performance, being both economical and practical.