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  #11  
Old 10-20-2010, 02:17 AM
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I have done a lot of research on Nitrogen use for a long-haul trucking company. There are several advantages, many of which Rootbeer mentioned. And, contrary to belief, once you switch to Nitro you do not have to use it to top off your tire, you can use regular air, especially in an emergency. You would just want to get the tire purged and refilled if you add a lot. That being said, through my study, the cost offset really isn't there unless you drive in places with extreme temperature variations, and/or put a lot of miles on your tires (hence trucking/fleet use). The cost offset is realized through the (however small it may be) extension of wear, and consistent MPG that results in Nitro's ability to maintain a more constant pressure. Alternatively put, in a passenger vehicle if you compared the the entire life of the same two sets of tires, one set with air, one with Nitro, you'd likely see some savings, but how much savings you'd see compared to the extra effort/money Nitro filling involves, it would not likely be much.
Just some factual research I did ...with a dash of opinion thrown in of course...
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  #12  
Old 11-14-2010, 11:39 AM
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Air expands and contracts from hot/cold temp`s, nitrogen does not.
Thats why they claim the inside of a tire will last longer.

So it would be true, tires would last a little longer,
BUT nitrogen is definatly not worth the extra money spent for the extra hassle`s it brings.

Nitrogen filled tires = SNAKE OIL SALES....!!!!!!!!!!!
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Old 11-14-2010, 12:36 PM
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another issue where "stick to the basics" comes to mind
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Old 11-15-2010, 06:27 PM
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I had nitrogen in my van and the pressures went up and down like regular air does. waste of money,
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Old 11-16-2010, 11:07 PM
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Boyle's Law(http://en.wikipedia.org/wiki/Boyle%27s_law) states that the pressure of a gas is inversely proportional to the volume. Doesn't matter what gas it is, they all behave the same way. Charle's Law(http://en.wikipedia.org/wiki/Charles%27s_law) states that the temperature of a gas is proportional to the volume of the gas, again, it doesn't matter what the gas composition is, air and nitrogen behave the same way. That's phsyics.

Consumer Reports looked at nitrogen: http://blogs.consumerreports.org/car...nitrogen-.html

Popular Mechanics: http://www.popularmechanics.com/cars...stions/4302788

How Stuff Works: http://auto.howstuffworks.com/question594.htm

And Commercial Fleet Digest: http://www.psitiredigest.com/tiredigestjuly07.pdf

Professional race cars experience temperature swings much higher than passenger cars, and the articles mentioned the effect of water vapor present in air that is responsible for the difference. Most of the tire manufacturers won't endorse nitrogen as no one has shown a proven benefit.

Stick with air, and check it regularly.
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