There are two main types of aftermarket tire pressure monitor systems. One type uses sensors that are installed inside the tires, in which case they are typically an internal part of the valve stem. The other type uses sensors that are built into valve stem caps. Each type of sensor has its own advantages and disadvantages, but only the cap type can be installed at home.
If you want a system that has sensors built into the valve stems, you will probably have to visit a mechanic. It is possible to do the job at home if you have the necessary equipment to change tires. You can also pull off your wheels at home and take them to a shop that has a pneumatic tire machine if you like.
Cap-based tire pressure monitor systems can typically be installed without any special equipment. In order to install this type of system, you will need:
- Enough sensors for your tires.
- A receiver unit designed for use with the sensors.
- Somewhere to store your old valve stem caps.
- Anti-seize compound (optional).