According to the U.S. Department of Energy, tires that are underinflated can lower gas mileage by 0.4 percent for every 1 psi (pound per square inch) drop in the pressure of all four tires.
Poor gas mileage isn't the only consequence of underinflated tires, however. Tires that are substantially
underinflated compromise both safety and tire life. Driving a vehicle with tires that are significantly underinflated increases the risk of tire failure, including blowouts and tread separation. These incidents could potentially result in loss of control of the vehicle.
Properly inflated tires also last longer, allowing drivers to save money by getting more mileage out of their tires and having to replace them less frequently.
If you're not sure how to check your air pressure or are not comfortable doing it, feel free to stop in at Dean’s Auto Repair and we will check it for you.