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Old 04-01-2016, 05:16 PM   #29
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Tire Inflation using nitrogen?

If your tires increase 20 lbs from cold to hot - running then you have tire issues , either under inflated for your weight or you have a severe amount of moisture in them .
N2 eliminates moisture !

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Old 04-01-2016, 06:01 PM   #30
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[QUOTE=Dale & Mark Bruss;3002890]

But that is not the reason for Nitrogen. Aircraft tires have better odds of blowing on landing and the Nitrogen mans there is no Oxygen to feed the tire fire.[/QUOTE

Commercial Airlines* The Federal Aviation Administration (FAA) requires nitrogen in all commercial aircraft tires to eliminate the potential for water vapor (inherent in normal compressed air) from freezing at high altitudes.
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Old 04-01-2016, 07:11 PM   #31
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According to the Michelin load chart, 110 psi is the minimum to carry the load. I run 115 psi (60* OAT cold) in them. When I asked a Michelin rep about the pressure rise up to 135 to 138 psi on a 90* sunny day, he said that was normal and not to be concerned. So, for three years I haven't been concerned.
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Old 04-02-2016, 11:01 AM   #32
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Just to be clear. I see nothing wrong with using N2 to inflate tires. I just question the claims of the almost magical benefits as some try and justify the cost.

Yes using N2 to inflate tires will result in dryer conditions inside the tire air chamber but N2 does not "dry out" the air inside a tire any more than using desiccated compressed air.

The % N2 inside a tire after purging a few times in a test lag can get up toward 96 - 98% but based on gas spectroscopy measurements you don't get to 100%.

RE improved mileage claims and less pressure rise claims. I would point out that fuel economy will be better with higher pressure so exactly how does preventing a pressure rise yield better fuel economy. The only way you can claim improved MPG is if you compare a tire that has not had its inflation maintained over a period of months vs a tire inflated with N2 that was maintained.

Bottom line. If someone is offering to inflate your tires with N2 at no cost and you don't have to make special trips (burn fuel) to top off your tires every few months or each travel season then I would say go for it.

I have both Argon and CO2/Argon mix gas available in my shop but when I inflate or add air to my tires, I just use my regular shop air. I do however maintain my air dryer and drain my compressor tank frequently.
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Old 04-02-2016, 11:10 AM   #33
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My 2 ,
Bought tires for Costco for car. They use nitogen,
After 1 year, haven't had to add air, still @ 36 PSI.
With tps sensors, less moisture is a good thing!
Cost of changing over, doubt it's worth it.
I know if you buy tires from Costco, they only use nitogen at no extra charge.
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Old 04-02-2016, 11:30 PM   #34
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N2 is used in the racing community because it's dry and has no moisture. Water condensed in air when heated will expand twice as much as regular air or N2. Believe me it's a science. That way the size the tire grows is better controlled. For a motorhome it's not anywhere that critical. Besides we used to vacuum down those tires after they were mounted then still purge them with N2 and no tire shop is going to do that. Don't waste your money.
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Old 04-03-2016, 09:43 AM   #35
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Nitrogen is a good thing. Regular air, as long as it is dry (you can put a dryer in line on your compressor) will perform nearly as well. Most dealers don't charge for it anymore and there are a few manufacturers that fill their tires with nitrogen at the factory as an added benefit. To me, its just a convenience not having the tires change pressure due to seasonal changes.
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