R55 Filled tires with nitrogen
#26
Sorry, Big, but thats nitrous oxide, not nitrogen.
And some articles on the topic - a few of the top 10 on a Google search:
- Consumer Reports - 1.5lb less pressure loss in a YEAR. You need to check it a couple of times each monta nyway. http://blogs.consumerreports.org/car...nitrogen-.html
Oh yeah, and if you pay $10/tire for 20 cents worth of nitrogen to get to 95% concentration instead of 78%, you are credulous, to put it gently.
- The Straight Dope - points out that the outside of your tires are exposed to oxygen anyway, so no difference in the life of the rubber. oh BTW, I replace mine because they wear out on the outside... http://www.straightdope.com/columns/...instead-of-air
- Hot cup of joe: debunks the five arguments about the value of nitrogen - http://ahotcupofjoe.wordpress.com/20...-tires-a-scam/
This whole idea is right down there with using acetone as a gas additive - silly, to put it mildly, and a rip-off by the tire dealers, to be more honest.
And some articles on the topic - a few of the top 10 on a Google search:
- Consumer Reports - 1.5lb less pressure loss in a YEAR. You need to check it a couple of times each monta nyway. http://blogs.consumerreports.org/car...nitrogen-.html
Oh yeah, and if you pay $10/tire for 20 cents worth of nitrogen to get to 95% concentration instead of 78%, you are credulous, to put it gently.
- The Straight Dope - points out that the outside of your tires are exposed to oxygen anyway, so no difference in the life of the rubber. oh BTW, I replace mine because they wear out on the outside... http://www.straightdope.com/columns/...instead-of-air
- Hot cup of joe: debunks the five arguments about the value of nitrogen - http://ahotcupofjoe.wordpress.com/20...-tires-a-scam/
This whole idea is right down there with using acetone as a gas additive - silly, to put it mildly, and a rip-off by the tire dealers, to be more honest.
#27
Just for a point of reference, when I put my winter setup on in early November I inflated the tires to 38psi with regular air, but did it indoors so the atmosphere was probably rather dry at the time (so there's relatively little moisture in the air in the tires right now) It was about 68 degrees in the apartment and 45-50 degrees outside when I did this. As of last week with temps in the 20s my tires are at 37psi. I don't think the advantages 1psi gives me is worth even the effort to get in my car and drive to the dealership or a tire-shop with nitrogen even if it's otherwise free. I'd use more in gas getting there than any savings I'd gain from it.
#28
Just for a point of reference, when I put my winter setup on in early November I inflated the tires to 38psi with regular air, but did it indoors so the atmosphere was probably rather dry at the time (so there's relatively little moisture in the air in the tires right now) It was about 68 degrees in the apartment and 45-50 degrees outside when I did this. As of last week with temps in the 20s my tires are at 37psi. I don't think the advantages 1psi gives me is worth even the effort to get in my car and drive to the dealership or a tire-shop with nitrogen even if it's otherwise free. I'd use more in gas getting there than any savings I'd gain from it.
As for the drop from 38psi to 37psi, that's exactly what would be expected for a 20-degree temperature change, based on temperature and pressure being directly proportional. It's about a 3-4% drop in temperature, and a 3-4% drop in pressure.
#29
Obviously you don't know your car, if you did, you'd realize that waxing your car ACTUALLY adds drag to it.
#30
Some of you guys need to go back to high school and take a physics class:
- The only way the ride will be changed at all is if you change the pressure.
- Yes, gas pressure varies with temperature (Boyle's Law) - but the variation is not sensitive to what gas is used unless it is cold enough for some of it (i.e. water vapor) to condense or crystallize out. BTW, five minutes of driving will warm the tire up enough to evaporate moisture again anyway.
- and BTW, helium would leak out of the tires in a week or two
- The only way the ride will be changed at all is if you change the pressure.
- Yes, gas pressure varies with temperature (Boyle's Law) - but the variation is not sensitive to what gas is used unless it is cold enough for some of it (i.e. water vapor) to condense or crystallize out. BTW, five minutes of driving will warm the tire up enough to evaporate moisture again anyway.
- and BTW, helium would leak out of the tires in a week or two
#31
As for waxing making my car faster, if I believe it, it must be true!
I'm all for faith-based science!
#32
Faterdeth, you should read the actual articles I cited instead of starting up the personal head-butting again. You might learn something for a change.
For example:
"A flavor of ice cream being transported affects a car's performance: every time vanilla is the driver's choice, the car stalls."
http://www.snopes.com/autos/techno/icecream.asp
For example:
"A flavor of ice cream being transported affects a car's performance: every time vanilla is the driver's choice, the car stalls."
http://www.snopes.com/autos/techno/icecream.asp
#33
For example:
"A flavor of ice cream being transported affects a car's performance: every time vanilla is the driver's choice, the car stalls."
http://www.snopes.com/autos/techno/icecream.asp
#37
Faterdeth, you should read the actual articles I cited instead of starting up the personal head-butting again. You might learn something for a change.
For example:
"A flavor of ice cream being transported affects a car's performance: every time vanilla is the driver's choice, the car stalls."
http://www.snopes.com/autos/techno/icecream.asp
For example:
"A flavor of ice cream being transported affects a car's performance: every time vanilla is the driver's choice, the car stalls."
http://www.snopes.com/autos/techno/icecream.asp
Last edited by Fatherdeth; 02-05-2009 at 08:45 AM.
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