Tire Pressure Gauge Dimensions

The tire pressure gauge sizes are usually measured by the dial face. For example, the Moroso 89560 has a 2-5/8" diameter dial face. It also has a 15-1/2" hose. These measurements can also be found in other tire pressure gauges sold.


The tire pressure gauge is used to monitor the pressure on tires. The environment can produce variability pressure (13% to 15%) because of temperature changes (0 C to 40 C). Other changes can take place due to altitude changes.


Drivers must realize that tires are set for precise loads at specific pressures. This means the tire must be set at the ideal pressure amount. Whatever the tire pressure gauge size used, they are always used when the tire is cold. A cold tire means the tire has not yet been used.

This is important because a heated tire alters the internal pressure. The accuracy of these gauges varies. The typical ones are ±3 psi. There are also some that have an accuracy of ± 0.05 psi.

Tire Pressure Sensors

Many automobiles come with built in tire pressure sensors. However this feature is not present in all cars. For this reason, a tire pressure gauge is necessary.

How to Use the Tire Pressure Gauge

This is a general guideline. Follow the instructions included with your tire pressure gauge to get more accurate results.

Start by taking off the cap from the tire valve. Whatever the tire pressure gauge size used, the gauge will have two ends. One end is a fit for the valve.

The other end has a stick that pops out when the other end is set into the valve. Ensure the measurement stick is set in the gauge. Put the end for the valve tightly. You must make a firm seal. You will know the fitting is correct when the stick comes out.

Now look at the measurement stick. The pressure will be shown there. If necessary, repeat the process. Sometimes the reading isn’t correct the first time. If the reading is the same, then the tire pressure reading is correct.

How to Choose a Tire Pressure Gauge

Remember that you will get what you pay for. Cheap gauges often produce inaccurate readings, so be prepared to spend some money on quality gauges. Pencil type gauges are the ones with the measuring sticks.

There are also digital gauges available these days. The main advantage of using these gauges is that they are easy to read. The drawback is they are not as accurate and need batteries to run. The most accurate are the dial type readers. However, they can also be the most expensive.

The best types of gauges are the ones that let you make adjustments as you read it. There are also some pressure gauges that have flashlights and other accessories included. You can save some money by purchasing these instead of buying other instruments.

The tire pressure gauge sizes are not as important as the accuracy of the reading. Make sure you get a high quality unit so the reading will be accurate.

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