Proper tire pressure ensures safety, optimal handling, fuel efficiency, and tire longevity. Pressure should always be checked when tires are 'cold'.

Find Recommended PSI: Locate the sticker on the driver's side doorjamb or check the owner's manual. This shows the recommended cold tire pressure (in PSI or kPa) for the front and rear tires. Do not use the maximum pressure listed on the tire sidewall.
Check When Cold: Measure pressure when the tires are cold, meaning the car hasn't been driven for at least three hours or has been driven less than a mile at moderate speed.
Use Gauge: Purchase a reliable tire pressure gauge (digital, dial, or pencil type).
Measure: Remove the valve cap from one tire valve stem. Press the gauge firmly onto the valve stem until the hissing sound stops and the gauge provides a reading. Note the pressure.
Compare & Adjust:
- If the pressure matches the recommended PSI, replace the valve cap.
- If the pressure is low, use an air compressor (at home or a gas station) to add air in short bursts, rechecking the pressure frequently until it reaches the recommended level.
- If the pressure is high, press the small pin in the center of the valve stem with the gauge's nub or a small tool to release air in short bursts, rechecking until it reaches the recommended level.
Repeat: Check and adjust all four tires (and the spare tire, if accessible, which often requires higher pressure - check manual).
Frequency: Check tire pressure at least once a month and before long road trips.

N/A - Details the standard, correct procedure for maintaining optimal tire inflation for safety and performance.

Use Tire Gauge and Inflate to Door Jamb PSI When Cold