How Do I Find the Correct Tire Pressure for My Car?
The recommended tire pressure for newer cars is typically displayed on a sticker inside the driver’s door. If there isn’t a sticker, then you can frequently find the specs in the owner’s manual. For passenger cars, they will generally recommend 32 psi to 35 psi when the tires are cold.
If you want the most accurate tire pressure reading, check when the tires are cold. As they roll along the road, friction between them and creates heat, which then increases both temperature and air pressure. For consistent readings, make sure to do this after the car has been sitting overnight or parked for a few hours.
It may seem counterintuitive, but do not inflate your tires to the pressure listed on the tire itself. That number is merely the maximum pressure that the tire can hold; it is not indicative of what the recommended pressure for your vehicle should be. If you overinflate your tires, Not only will this result in a jarring ride, but it will also make handling your car more difficult. Conversely, driving on underinflated tires can cause premature wear due to increased friction.
One way or another, if your tires aren't inflated to their recommended pressure, it will negatively affect tire wear and performance — as well as the maintenance schedule for replacing them.