Check your tire presure once a month.
It is estimated that up to 80 per cent of car tires are under-inflated. Properly inflated tires:
Improves fuel efficency by 3%.
Makes
the tires safer and last longer.
Decreases emissions by up to 5%.
Your vehicle's recommended tire pressure can normally be found inside the driver's door frame.
For more information about how to improve your gas mileage, go to http://www.fueleconomy.gov/.