pressure gauge is designed
to check the air pressure inside the tires on a vehicle. Correct tire pressure is
essential for correct vehicle operation and can improve mileage and performance
as well. A tire gauge is constructed with a small diaphragm that is attached to
a measurement device. The style of gauge can vary from digital to internal slide.
A tire gauge is accurate to +/- 3 PSI, however it is possible to buy more advanced
models that are capable of determining the pressure to as closely as +/- 1 PSI.
Tire Pressure Gauge
Some vehicles are designed with a built in
tire pressure sensors
These sensors are used to monitor the air pressure in all tires. If a tire has low
air pressure the vehicle will illuminate a warning light on the dash. Occasionally
the monitoring system will need recalibration; this procedure is different for every
car. Consult an online repair manual for your specific instructions.
Electronic Tire Pressure Gauge
To use a tire gauge, remove the protective dust cap from the tire's valve stem,
then insert the tire gauge and press firmly. The gauge will read the pressure inside
the tire, add air as needed and recheck. Pressure readings will differ due to change
in temperature. Example: If tire pressure is 30 pounds @ 60 degrees it would be
about 35 pounds @ 90 degrees, about 5 pound for every 30 degrees. This is a rough
estimate because the volume of the tire determines the actual variance amount. Store
the tire gauge in a cool, dry place. To determine the proper amount of air pressure
for a particular tire, consult the sidewall of the tire.
Tire Specification Identification
Avoid dropping the air gauge; this can cause internal damage that could affect
the accuracy. Most gauges do not need calibration but higher quality gauges can
have a calibration kit included. You can reduce the maintenance and repair of your
vehicle by checking the tire pressure regularly. Proper tire pressure will help
tires last longer and help the gas mileage of the vehicle.
If further assistance is needed, our certified car repair technicians are ready
to answer your car questions
Related Car Repair Information
Article first published 2016-11-28