☻Pressure 1. Tires that are under-inflated can put you at high risk of damage or even a blowout. They also decrease the fuel efficiency of your car. 2. In the user manual, you can find the optimal PSI for your car and get your tire pressure checked at least once a month accordingly. 3. If you want to check the tire pressure yourself, follow the user manual steps. You can start with a gauge to check the PSI.