147 Interesting Things - Cold Weather, Tire Pressure, and Nitrogen

For every 10 degrees of temperature drop, tires will drop 1-2 pounds of pressure. Cars typically require a tire pressure of 30 to 35 psi all year. Traditionally, car tires are filled with compressed air made up of 78 percent nitrogen and around 21 percent oxygen, but what about using pure nitrogen?! (3 minute audio)

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