To identify your vehicle’s recommended PSI, check the tire placard. The tire placard is an informational label put on your vehicle by the original equipment manufacturer, normally located inside the driver’s side door frame or doorpost. It may also be on the edge of the driver’s door or the inside of the glove box door or trunk lid. It contains information including the vehicle manufacturer’s recommended tire pressure for your vehicle, the recommended tire size, and the maximum load you should have in your vehicle. This information is also located in your owner’s manual.