Myth 1: "The correct PSI is printed on the tire."
BUSTED! As mentioned before, the number on the tire's sidewall is the maximum cold pressure the tire can safely hold. It is not the recommended pressure for your specific car. Your vehicle's weight, performance, and handling characteristics determine the ideal pressure, which is always found on the driver's door jamb sticker.
Myth 2: "If the tires look fine, they are fine."
BUSTED! A tire can lose a significant amount of air—often 10 PSI or more—before it becomes visibly flat. You cannot accurately assess pressure by sight. Relying on this method is a surefire way to drive on underinflated tires.
Myth 3: "You should inflate your tires to the 'max PSI' for better fuel economy."
BUSTED! While overinflation can slightly reduce rolling resistance, the downsides are severe. You'll get a harsher, noisier ride, significantly reduced traction (especially in wet weather), and accelerated wear in the center of your tread. The minimal fuel savings are not worth the safety risk and extra tire costs.
Myth 4: "You only need to check your tires if the TPMS light comes on."
BUSTED! Your TPMS is a warning system, not a maintenance tool. It's typically set to illuminate only when pressure is 25% below the recommended level. By that point, you're already driving on dangerously underinflated tires, hurting your fuel economy, and causing excess wear. Be proactive and check monthly.
Myth 5: "You should check pressure right after driving."
BUSTED! Always check your tires when they are "cold." Driving heats up the tires and the air inside, causing the pressure to rise and giving you an inaccurate reading. If you must check after driving, expect the reading to be 4-5 PSI higher than the cold pressure. It's best to wait until they cool down.
Stop guessing and start measuring. A few dollars spent on a reliable gauge is one of the smartest investments you can make for your car.
