What's the Big Deal About Tire Pressure?
Tire pressure plays a big role in the handling, fuel economy and safety of your vehicle. When the tires are underinflated, they wear out faster. Your car will have more drag to it, which could reduce its fuel economy.
Putting too much air in your car's tires is also a problem. When there is too much air pressure in the tires, there is less surface area to come into contact with the road. This decreases your traction, causes problems with handling and could even make you lose control. The excessive wear in the center could cause a blowout.