How Often Should Car Tire Pressure Be Checked?

Check tire pressure, including spare tires, at least once a month or before each long trip. When checking tire pressure, the tire pressure should be checked when the tires are cold, that is, after parking for at least three hours. If necessary, the tire pressure should be replenished to the pressure specified on the vehicle notice board. Because cold tires give the most accurate readings, you should drive to the nearest inflation point whenever possible to inflate them. Do not deflate or depressurize hot tires. It is normal for the tire pressure to be higher than the recommended cold inflation pressure after the tires have warmed up due to driving. If you lower the tire pressure on a hot tire, there won't be enough pressure on the cooled tire.
In addition, use a high-quality air pressure gauge to check tire pressure, and don't trust your eyes too much. You can't tell if a tire is inflated to the correct pressure by looking at it.