Pump up your tires -- and spare the air

You can improve your gas mileage by about 3.3 percent if you keep your tires at their appropriate pressure. For a vehicle that gets the national average of 19.6 miles per gallon and is driven the national average of 12,000 miles a year, properly inflated tires result in a savings of about 20 gallons of gas a year. With gas costing about $3 per gallon, this equals an annual savings of $60 per year You'll feel the difference when you drive, your tires will last longer, you and your family will be safer -- and you'll personally be sparing the air of 383 pounds of CO2 emissions.