Tire Facts Tire maintenance is very important. Proper maintenance – such as maintaining proper inflation pressure, alignment, and balancing of your tires - will not only result in longer tire life, but it can also increase your gas mileage as well. Tire maintenance also contributes to increased safety. Today’s automakers and tire manufacturers are taking a proactive approach. Tire pressure monitoring systems (T.P.M.S.) have started appearing on vehicles within the last few years in order to alert the driver of a potential problem with under- or over-inflation. It also is important for you to understand how tire sizing and grading works, in order to be sure you purchase the right tires for your vehicle. Familiarizing yourself with basic tire information will help you accomplish your goals.