With the price of gasoline hovering around $1.90 per gallon, it helps to pay attention to even the smallest ways to conserve.

According to the Environmental Protection Agency, tires underinflated by 2 pounds per square inch can cause a 1 percent increase in fuel consumption -- possibly 18 gallons, or $34.20 per year.

Check your vehicle's tire pressure at least once a month, when the tires are cold and before and after long car trips.