Ignoring tire pressure
Myth: Some people feel they don't need to check their tire pressure because the service station they visit does it for them every several months.
Fact: Under-inflated tires decrease fuel economy, cause imprecise handling, suffer premature wear at the edges of their tread, and can overheat and fail at highway speeds. Tires typically lose about one pound of pressure per month through normal seepage, and as seasons change, tires lose or gain another pound of inflation pressure with every 10 degree change in outside temperature. You can improve your vehicle fuel economy by up to 3 percent by just keeping your car's tires properly inflated.