WHAT IS A TIRE PRESSURE GAUGE?
Both under- and over-inflated tires can impact handling, braking distance, and fuel economy and also cause the tires to degrade faster, so it’s important to maintain optimal tire pressure at all times. If you don’t have a Tire Pressure Monitoring System, a tire pressure gauge is a simple way to check the pressure. A tire pressure gauge is a small instrument that measures tire pressure within +/-3 psi. Higher precision gauges can get within +/-1 psi accuracy.
They are small enough to fit in the glove box and can be purchased at an auto parts store, mechanic shop and even some gas stations.
HOW TO USE A TIRE PRESSURE GAUGE
There are three different types of tire pressure gauges:
The main difference between the types of tire pressure gauges is how the reading is displayed. The process to get that reading is basically the same:
- Locate the tire valve. It will be protruding through the rim and look like a small tube with a threaded cap.
- Remove the cap and put it somewhere safe.
- Press the tire pressure gauge against the tire valve. The valve has a spring-loaded valve core that stays closed using the pressure of the tire’s air chamber. You’ll need to push the tire pressure gauge through this opening.
- Keep the gauge firmly in place. Adjust the angle to prevent excessive air leakage if you hear air hissing.
- Read the pressure on the dial or the digital screen, or measurement indicator (pencil gauge)
If the tire is overinflated, use the tire pressure gauge to keep the valve open to release the appropriate amount of air. If it’s under-inflated, use an air compressor to add air and check the pressure again.