You can find the appropriate or recommended tire pressures recommended by your vehicle manufacturer on a sticker on the door jamb or in your vehicle's owner's manual. Some models may place a sticker on the trunk lid, console, or fuel door. Recommended pressure is usually between 30 and 35 PSI. This number indicates the minimum amount of air pressure needed to support the maximum load capacity of your vehicle. If less than this You will experience poor vehicle control. This includes premature wear from excessive bending and overloading the tires. When your tires are inflated to the recommended PSI, your vehicle will be able to perform at its best.