08-02-2010, 10:13 PM
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#36 (permalink)
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Join Date: Jul 2010
Location: Near Portland, OR
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Quote:
Originally Posted by Frozenr6
where to start with this one I work in an industry where we make siginifcant investment in tires about 30 million a year and we dont use nitrogen in our tires. And we have examined it at length.
1) The stability over temperature argument - is not that simple, this goes to why race teams use nitrogen. It is not actually stability that they are chasing it is the absolutely predictable rate of expansion dervied from not having any moisture in the tire. When you are looking at .5 pounds of pressure making a handling difference being able to truly cold fill a tire and know what the hot temperature is going to be is a must. Partial myth there due to no applicability to road cars.
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What you say about Nitrogen being more stable due to no water in the tire makes sense. I also remember from Physics 101 that water expands to something like 1500 times its volume when it changes to a gas, so no water in the air or nitrogen would make the pressure more stable (at least that makes sense to me). I would think that dry air would work about as well. Nitrogen sounds cooler though.
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