Yet how often do people actually check it. In fact most motorists will not even look at their tires until someone else points out a problem.
So what’s the big deal and why does tire pressure effect miles per gallon anyway?
This will force the engine to work harder to move the car the same distance. Left unchecked this condition can really raise your annual fuel costs much higher.
How to check tire pressure
You should always let the tires cool down before checking pressure. Hot air expands and may cause false readings. Also the manufacturer specification is provided as a cold setting.
Car makers are required to place a tire information label in the car providing the correct tire pressures both front and rear.
This label may be found on the edge of the door or doorjamb. Sometimes they are in the glove box. Or I have even seen them on the inside of the gas door or cover.
If the label lists a pressure range, use the higher number in order to maximize fuel economy.
Fuel economy tires
This also causes the tires to wear much quicker. If they remain deflated total tire miles can be cut in half.
It’s important to note that radial tires can be under inflated yet still look normal. This is affected by the strength of the sidewall.
Also low profile tires can be impossible to visually inspect. So check the tires with a quality pressure gauge. “Digital tire pressure gauges” are the most accurate.
The average car tire loses about one psi of air per month and one psi for every 10 degrees drop in temperature.
With these kinds of numbers you can see if you skip checking inflation you to will eventually join the ranks of the under inflated. Changes in the ambient air temperature cause the tire pressure to fluctuate.
This is again why tire pressure should always be checked when the tires or cool. Shoot for the morning in the drive way before driving the car at all. It is recommended that you check tires about once per month and before a long trip.
Is it possible to receive fuel economy results beyond your vehicles, advertised numbers? This is absolutely possible. Hyper miling is one way that has become popular.
There are also groups of people that are thinking completely outside the box and taking action to increase fuel economy.