I admit, I was never convinced that keeping up your tire pressure could make any difference in your gas mileage. Over the years I’ve done a decent job of tracking my gas mileage and I’ve never noticed that having low or high tire pressure made any difference. It also never mattered whether one tire was low or all of them.
However, I’ve had an interesting development. We have a slow leak in our driver’s side rear tire. I track the mileage on every fill up. Well… the last time I filled up the tire was aired up and we got 27 miles to the gallon. This time the tire was low and we got 23 miles to the gallon. So, I am going to air up the tire and fill up the tank and let you know what happens!
