The recommended levels may also be posted on the vehicle's door, near the gas cap lid or in the glove box. To get an accurate reading, tires must be cool. If you have to drive somewhere to get air, check and record the tire pressure first and add the appropriate air pressure when you get to the pump. It is normal for tires to heat up and the air pressure inside to go up as you drive. And don't forget the spare.
Some spares require higher inflation pressure.
In the course of daily driving, few of us have escaped Traveling on a rough road, running over a pothole or hitting a curb. Jolts like that can throw the front end of your vehicle out of alignment and damage the tires. If you use a vehicle with front-wheel drive or one with an independent rear suspension, you will need to get all four wheels aligned. And while you're checking the alignment, have the tire balance checked too. Unbalanced tire and wheel assemblies can cause irregular tire wear.