Nitrogen
Joined: Jan 2002
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From: North Austin, TX
One last comment - unless your wheels have two valve stems so that you can purge the air out of them while you fill with nitrogen, you're not only a f%*$ing idiot, but you aren't even getting what you paid for.
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From: Dallas
Originally Posted by altiain,Jun 17 2008, 02:38 PM
One last comment - unless your wheels have two valve stems so that you can purge the air out of them while you fill with nitrogen, you're not only a f%*$ing idiot, but you aren't even getting what you paid for.
Ryan
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Joined: Mar 2004
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From: North Texas
Originally Posted by altiain,Jun 17 2008, 02:33 PM
Umm... fail.
Nitrogen is still a gas. It is not some mythical, magical substance.
As a gas, nitrogen still obeys the Ideal Gas Law. What does that mean? It means that as the temperature of a gas in a closed system (like a tire) increases, the pressure increases proportionally.
The reason race teams use nitrogen instead of air is simple: air has water vapor in it. The amount of water vapor in the air influences the rate of expansion of said air in response to an increase in temperature. By contrast, nitrogen is a "dry" gas, so it will expand at the same rate regardless of how humid it is. Race teams like this predictability, so they use nitrogen instead of air.
In other words, nitrogen won't stop the pressure in your tires from fluctuating, it will only make them fluctuate more predictably. If you need to calculate the pressure response of your tires on a regular basis, you will find nitrogen useful. If you don't, you won't. It's that simple.
Regarding ride quality: many things influence ride quality, but what you fill your tires with is not one of them. For any given tire and car combination, a tire inflated to 30 psi with air will ride the same as a tire filled to 30 psi with nitrogen, or argon, or neon, for that matter.
Long story short, if someone tells you their car rides better because they filled their tires with nitrogen, they are a f&$%ing idiot. If someone is putting nitrogen in their passenger car tires, especially if those tires will never be used in a competition environment, they are a f%&$ing idiot. There are a lot of f^#$ing idiots out there. Don't be one of them.
Nitrogen is still a gas. It is not some mythical, magical substance.
As a gas, nitrogen still obeys the Ideal Gas Law. What does that mean? It means that as the temperature of a gas in a closed system (like a tire) increases, the pressure increases proportionally.
The reason race teams use nitrogen instead of air is simple: air has water vapor in it. The amount of water vapor in the air influences the rate of expansion of said air in response to an increase in temperature. By contrast, nitrogen is a "dry" gas, so it will expand at the same rate regardless of how humid it is. Race teams like this predictability, so they use nitrogen instead of air.
In other words, nitrogen won't stop the pressure in your tires from fluctuating, it will only make them fluctuate more predictably. If you need to calculate the pressure response of your tires on a regular basis, you will find nitrogen useful. If you don't, you won't. It's that simple.
Regarding ride quality: many things influence ride quality, but what you fill your tires with is not one of them. For any given tire and car combination, a tire inflated to 30 psi with air will ride the same as a tire filled to 30 psi with nitrogen, or argon, or neon, for that matter.
Long story short, if someone tells you their car rides better because they filled their tires with nitrogen, they are a f&$%ing idiot. If someone is putting nitrogen in their passenger car tires, especially if those tires will never be used in a competition environment, they are a f%&$ing idiot. There are a lot of f^#$ing idiots out there. Don't be one of them.
Thanks, Made my day!
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