Did you realize that according to fueleconomy.gov that up to 3% of fuel economy is lost for every 1 psi the tires are under-inflated? That's right, for every 1 pound your tires are under inflated you lose 3% of your cars fuel economy.
You can improve your gas mileage by up to 3.3 percent by keeping your tires inflated to the proper pressure. Under-inflated tires can lower gas mileage by 0.3 percent for every 1 psi drop in pressure of all four tires. Properly inflated tires are safer and last longer.That translates into an equivalent gasoline savings of up to $0.12 per gallon. Lets say you have a 20 gallon tank on your vehicle. That would be $2.40 per tank of gas or nearly half a gallon of gas that you are losing because improper tire pressure.
- fueleconomy.gov
How do you know what the correct tire pressure for your particular vehicle is? Since 2003 the law requires a placard on new vehicles must be located on the driver's side doorjamb (B-pillar). If a vehicle does not have a B-pillar, then the placard is to be placed on the rear edge of the driver's door. And if the vehicle does not have a B-pillar and the driver's door edge is too narrow, the placard is to be affixed on an inward facing surface next to the driver's seating position.
Prior to 2003 they can be located on the driver-side door or doorjamb, Fuel filler door, glove box or center console door, the engine compartment or on Ford Sedans they were placed on the rear passenger doorjamb.
It is highly recommended that you check your tire pressure at least once a month and save yourself the expense of lost fuel economy. Please if you don't already start being proactive and check your tire pressure regularly.
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