Cold Air and Tire Pressure
Changing temperatures can have an impact on your tires. Air expands when heated and retracts when it's cold. This can affect the air pressure in your tires when the temperature fluctuates. For every 10 degrees the temperature changes, you can expect a change of one psi for your tires.
On average for most of America, the difference between summer temperatures and winter temperatures is 50 degrees. That means the air pressure in your tires is 5 psi lower during these colder months. This can have a negative affect on your traction, and your gas mileage. It's estimated that 2 million barrels of oil every day could be saved in the United States if everyone drove their cars with the right tire pressure.
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