The recommended tire pressure for your vehicle can vary depending on the make and model of your car, tire size, and load requirements. It is important to maintain the correct tire pressure to ensure even weight distribution, promote fuel efficiency, and maximize tire lifespan. The recommended PSI (pounds per square inch) for most passenger cars will be between 30 to 35 PSI when the tires are cold. The recommended tire pressure can typically be found on a sticker inside the drivers door, in the owners manual, or on the rear edge of the door itself. It is important to note that the recommended tire pressure is a cold inflation pressure, which means the pressure check should be done after the vehicle has been sitting in the shade for a while. It is also recommended to check the tire pressure every other time you stop to fill up your gas tank, and to keep in mind that many vehicles have different tire pressures on the front and rear axle. Finally, it is important to not inflate your tires to the pressure listed on the tire itself, as that number is the maximum pressure the tire can hold, not the recommended pressure for the vehicle.