Winter Air Pressure Versus Summer Air Pressure

Tuesday, December 11, 2012 by Gary Stanley

Ever hear of someone changing out "summer air" for "winter air" in their tires? It may sound a bit silly, but that old myth does have a small degree of truth to it. Of course the air itself doesn't need to be changed, but the tire's air pressure does change over time and with changes in ambient temperature. Therefore, when the temperature is changing rapidly, it's a good idea to be extra vigilant during the seasonal transitions. 

While it's always a good idea to frequently monitor your tire's air pressure, it can be especially important to check it as the temperature gets colder. This is because a change of 10 degrees Fahrenheit in air temperature can change your tire's inflation by about one psi. During some winter months the temperature can be 40 degrees Fahrenheit one day and below zero just a few days later - that could mean a 4-5 psi drop in inflation pressure! 



You may think your tires support the weight of your vehicle, however they do not. It's the air pressure inside them that allows the tires to carry load. Maintaining proper air pressure is a must if your tires are to provide the best handling, traction, durability and fuel economy. The above example of a 4-5 psi drop may not sound like much, but consider this: some cars that lose 4 psi could be dropping 12%-15% in overall air pressure! With fuel prices as high as they are today, you can't afford to be negligent about maintaining your tire's air pressure.

We offer several excellent air pressure gauges to help you maintain proper psi and ensure the best performance and safety your tires can provide. 

For further information on properly checking your tire's air pressure, read "Remember to Check Your Tire Inflation Pressure."

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