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Air typically features about 78 percent nitrogen, so why should you pay more to fill your cars tires with pure nitrogen? Is there a tangible reason to spend more on this or are dealerships and auto shops just blowing hot air? The short answer is that nitrogen is a waste of time and money and that mechanics are trying to make some money from a problem that doesnt really exist. When it comes to your tires, air is a big deal. Air contracts and expands depending on the temperature. For every change of 10 degrees Fahrenheit, a tires pressure will change about 1 PSI (pound per square inch). This is why its recommended to check your tires on a regular basis. If its cold out, the pressure will drop, deflating your tires slightly, and theres a chance your fuel-economy might go down too. To resolve this, you will have to pump some more air into your tires. On the flip-side, if its hot, the PSI of your cars tires will increase, and you may get reduced traction or uneven wear of the tire. To solve this, you may need to let some air out of your tires. Air isnt the only gas to be affected by the weather like this, nitrogen is just as reactive to the temperature. |