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Old 04-24-2007, 06:04 PM   #15
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by TXiceman:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by dieselclacker:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Route 66:
Another "solution" to a non existent problem. </div></BLOCKQUOTE>

Exactly!!

Dieselclacker </div></BLOCKQUOTE>

For normal use in auto and truck tires...there is not a need.

Now what some one really needs to do is convince folks that there is a definite need for summer air and then winter air in your tires to improve performance on the road and extend tire life. just think, you could recover the air to be reused next year....

Ken </div></BLOCKQUOTE>
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Old 04-24-2007, 06:14 PM   #16
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I was flabergasted at how many responses I've received to my post - and so quickly! I now see why THIS is the place to go for quick, good information!! Thanks.
Ron
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Old 04-24-2007, 07:42 PM   #17
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I don't know how much water actually exists in an oxygen filled tire, but what about in the new "Sand balanced"/ ceramic bead balanced tires???
Wouldn't you want the driest environment possible for those systems????
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Old 04-25-2007, 03:18 AM   #18
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Whenever the topic of nitrogen in tires, synthetic oil, etc. comes up, some folks note the aircraft, and Nascar uses these products.

Nascar, aircraft, etc. are vastly different applications than RVs, and there is just no comparison between the two.

Plain old air has worked fine since the beginning of inflatable tires.
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Old 04-25-2007, 11:14 PM   #19
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One of the main advantages for using nitrogen in an rv tire is the much slower rate of air loss over time. Nitrogen molecule is larger than oxygen and doesn't permeate thru the rubber as fast. It's 3-4 times slower so instead of adding air every 2 months, you could expect to go 6-8 months before adding more.
Costco switched over in 2004.
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Here's a little blurb on why Costco chose nitrogen: LINK
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Old 04-26-2007, 04:03 AM   #20
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One of the big problems with using nitrogen is finding it when you need it.
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Old 04-26-2007, 05:52 AM   #21
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"N2 tire inflation is common to several industries. The aerospace industry uses nitrogen because of its consistent inflation pressure retention and reduction of oxidation in the rubber compounds. Auto and motorcycle racing use nitrogen because it is inherently dry compared to compressed air. Depending on the humidity of the inflation air, tire pressure can change dramatically (and non-linearly) during the heat build caused by racing. Nitrogen performs predictably as an ideal gas because it does not readily absorb or carry water. Large tires used on off-road vehicles in the mining industry, for example, use nitrogen to prevent auto-ignition of the tires due to the high temperatures and thick treads."

...

"While this is true in controlled laboratory tests of pressure retention in tires, the benefit to the real world consumer could be somewhat less. Pressure loss due to leakage around the rim flange seal of the tire to the rim and also the valve seal to the wheel (plus pressure loss through the valve itself) could account for some of the air loss experienced by the typical consumer, for example. The characteristic linear volume expansion with temperature because of nitrogen's inherently low water absorption characteristics is no benefit to the average driver because the handling requirements for daily commuting are nowhere near as demanding as for racing; the improvement would be negligible and imperceptible."

...

"The overall conclusion of the study is: When N2 is used as the inflation media, the change in rubber properties is significantly slowed down or even halted. From a practical standpoint it is important to note that the presence of 1 atmosphere of air in the 96% nitrogen inflated tires did not significantly affect the results, as compared to the 99.9% nitrogen inflated tire. This is important for the average consumer because the need to purge existing tires completely of air before filling with nitrogen may not be necessary. Another conclusion is that the oxidation of the steel belt rubber is truly driven from the contained air pressure inside a normal passenger or light truck tire. The skim region may be oxidized slightly from outside the tire when filled nitrogen, but the rate of degradation is significantly lower than when the tire is filled with air. The wedge rubber, on the other hand, is in a sufficiently thick part of the tire, and is not nearly as susceptible to oxidation from the outside. The converse of this conclusion, therefore, is that oxidative aging can be accelerated by the use of oxygen enriched filling gases in the tire cavity without changing the mechanism of degradation in the tires internal components."

The above came from: Effects of Nitrogen Inflation on Tire Aging and Performance
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Old 04-26-2007, 06:33 AM   #22
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Like the man said, "who needs it"?

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Old 04-26-2007, 09:37 AM   #23
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Duner:
One of the main advantages for using nitrogen in an rv tire is the much slower rate of air loss over time. Nitrogen molecule is larger than oxygen and doesn't permeate thru the rubber as fast. It's 3-4 times slower so instead of adding air every 2 months, you could expect to go 6-8 months before adding more.
Costco switched over in 2004.
Happy Trails,
Bill
Here's a little blurb on why Costco chose nitrogen: LINK </div></BLOCKQUOTE>

This has been discussed in this and other forums many times. For the most part, the only benefit to using nitrogen in car or truck tires is the additional profit the dealer makes for doing it. If you can get it free, fine.

Look at the facts. Air is 78% nitrogen. If, indeed, the oxygen leaks out at a faster rate than does the nitrogen, that only affects 21% of the gas in the tire. Over a relatively short period of time, the oxygen would permeate through the tire wall leaving an even higher percentage of nitrogen.

Dry air or dry nitrogen. Either is just fine. Just don't pay extra for it.
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Old 04-26-2007, 09:47 AM   #24
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by SacsTC:
I don't know how much water actually exists in an oxygen filled tire, but what about in the new "Sand balanced"/ ceramic bead balanced tires???
Wouldn't you want the driest environment possible for those systems???? </div></BLOCKQUOTE>

Tires are not filled with oxygen. They are filled with air. Air consists of 78% nitrogen and 21% oxygen. 78% N2, and that is free.
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Old 04-26-2007, 10:14 AM   #25
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by alvinc:
"N2 tire inflation is common to several industries.

The above came from: Effects of Nitrogen Inflation on Tire Aging and Performance </div></BLOCKQUOTE>

The Get Nitrogen Institute is hardly an UN-BIAS source!!!

"The Get Nitrogen Institute is a nonprofit organization located in Denver. We formed in 2005 to provide consumers, over-the-road truckers, fleet managers and others about the benefits of using nitrogen in tires."
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Old 04-26-2007, 02:17 PM   #26
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The only reason I use Nitrogen, I have 4 large cylinders from when I worked for the Phone Company( they use it to pressurize the phone cables). With 2,000 psi in the tank I can top off the tires real fast .
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Old 04-27-2007, 12:48 AM   #27
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Air works good for me. Have a hard time keeping up with air pressure. keeping them correct on auto and MH
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Old 04-29-2007, 03:14 PM   #28
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Tom N:
N2 in tires benefits the seller much more than the buyer. Ranks with paint sealants and fabric protectors.

-Tom </div></BLOCKQUOTE> Guess I better throw away my Scotchguard and sand off the clear coat on my paint job. I will get better mileage from the weight savings. Just kidding. I agree that using nitrogen in a RV tire provides very little benefit. Might have a slight benefit if you use EQUAL to balance your tires but many people use it with just normal air without any problems. I don't think the pressure loss through the rubber is that great either. I run my tires at 95 pounds front and 90 pounds rear. When I checked them this spring before reinstalling the tire pressure monitoring sensors they had lost an average of less than 2 pounds each for the year.
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