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post #91 of 484 Old 07-22-2012, 04:18 AM
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I bought a 3 digit Accutire digital gauge MS-4021B for $9.95 from Amazon about 6 months ago. Joes Racing dial gauge is another that Consumer Reports rates really high.

I set my tires to 40 psi 'cold' using this same gauge and the tire pressure screen matches. doznI4SE, it took me two nights to get mine inside the 0.5 reading. Not easy as I was letting them down from 44 psi nitrogen.

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post #92 of 484 Old 07-22-2012, 04:32 AM
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Originally Posted by Oz_TCH View Post
TPMS shows 40 PSI while my manual tire gauge shows 70 on 2 of the tires.

Also on one of my tires, I feel a little water coming out as I press the valve.

Tomorrow, I will go buy another tire gauge to see what it says.
Not sure what the moisture in that one tire can do. This is another reason for using nitrogen as it resist any moisture getting into the tires. If your using air you might have a tire shop let it down then air it up with a quality dry air compressor. A good chance the tire with the moisture could mess up any tire gauge. Walmart automotive/tire shop is pretty low priced working with a single tire problem. Discount Tire Store if one is nearby may not even charge.
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post #93 of 484 Old 07-22-2012, 05:29 AM
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Originally Posted by doznI4SE View Post
That looks like a nice gauge. I've used for many years and recommend the Accutire MS-401B.

My TPMS readings matched the gauge by 0.5 PSI when I checked several times, so I trust the TPMS now and only use the gauge if I have to add/remove air.
I have the Accutire gauge and it's pretty accurate. TPMS and gauge of within .5....


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post #94 of 484 Old 07-22-2012, 08:29 AM
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.......This is another reason for using nitrogen as it resist any moisture getting into the tires. ......
Really? Can you site a credible source that says nitrogen resists moisture? That's just plain BS!

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post #95 of 484 Old 07-22-2012, 08:34 AM
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Originally Posted by Oz_TCH View Post
...........Also on one of my tire, I feel a little water coming out as I press the valve.......
Did that tire have the valve cap on securely?

Was it raining or wet when you checked the tire?

Was this tire mounted at the factory, done aftermarket, and has this tire had any work done to it after factory?

I'm trying to understand the possible source of this water you saw.

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post #96 of 484 Old 07-22-2012, 01:55 PM
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Really? Can you site a credible source that says nitrogen resists moisture? That's just plain BS!
One of the benefits of nitrogen being used in airplane tires to reduce water vapors. Nitrogen is used in the NASCAR tires preventing any rim corrosion.

Look for the words water and water vapor mentioned six or more times on this page.

http://www.getnitrogen.org/why/index.php

This from a older site.

http://www.tireblast.com/2009/02/nit...our-tires.html

http://auto.howstuffworks.com/question594.htm

Why nitrogen in truck tires.

http://www.nitrofill.com/nitrogen-in-tires.aspx

The Indy race cars use nitrogen for the same reasons as the NASCAR teams.
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post #97 of 484 Old 07-22-2012, 02:03 PM
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Nitrogen does not resist water vapor. It just doesn't contain humidity when a clean source is used.

Race teams (of all kinds) use nitrogen because it is more stable pressure-wise as it heats. It has nothing to do with corrosion.

So many myths about the wonders of nitrogen...

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post #98 of 484 Old 07-22-2012, 02:28 PM
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Nitrogen does not resist water vapor. It just doesn't contain humidity when a clean source is used.

Race teams (of all kinds) use nitrogen because it is more stable pressure-wise as it heats. It has nothing to do with corrosion.

So many myths about the wonders of nitrogen...
Yea, right..

This article is not about the nitrogen. It's really about reducing oxygen and water vapor in your tires. The air in our tires is composed of 78% nitrogen, 21% oxygen and about 1% water vapor and other gases. When pure dry nitrogen is used to replace the air in your tires it improves fuel efficiency, handling and it will extend the life of steel rims or custom wheels and tires. By reducing oxygen and water vapor in your tires from 22% to less than 7%, your tires will maintain pressure three to four times longer. Plus it will keep you safer on the highway.

How does oxygen and water damage my rims and tires? Oxygen, especially at high temperatures and pressures, corrodes aluminum, steel wheels and rubber. This process is called oxidation. When oxidation occurs small particles of rust and aluminum oxidization in your steel or aluminum wheels can clog valve stems, causing them to leak. The oxidation can cause the surfaces of your wheel flange and tire beads not to seal properly causing another leak point.

Oxygen can also age the thin layer of rubber called the inner liner or radial ply. As the inner liner ages, more and more air migrates through the rubber, causing additional pressure losses. As oxygen migrates through rubber it can come in contact with steel belts and the steel bead causing them to rust.

While both nitrogen and oxygen can migrate through rubber, nitrogen does it much slower. It might take six months to lose a couple of pounds of nitrogen, compared to less than a month with wet compressed air. Dry nitrogen does not cause rust and corrosion on steel rims or aluminum custom wheels, and it does not degrade rubber like wet compressed air.
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post #99 of 484 Old 07-22-2012, 02:35 PM
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I'll agree with most of that. The fuel economy and handling claims are pretty much wishful thinking, but it does make sense to use a less caustic and more stable fill for your tires where possible. Problem is... most places don't have a way to pull a vacuum and remove the air that's already in the tire. They just fill them with nitrogen. Partially effective at least I guess.

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post #100 of 484 Old 07-22-2012, 02:56 PM
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Originally Posted by Zembonez View Post
I'll agree with most of that. The fuel economy and handling claims are pretty much wishful thinking, but it does make sense to use a less caustic and more stable fill for your tires where possible. Problem is... most places don't have a way to pull a vacuum and remove the air that's already in the tire. They just fill them with nitrogen. Partially effective at least I guess.
I rented a tank of nitrogen from a welding supplier here in town years ago to do my '07 TCH tires. When I bought the '12 XLE TCH the dealer had already put nitrogen in them. The hybrid tech told me this new nitrogen generator they use has the ability to somehow pulse the tires eliminating almost all the air, then fills them to normal pressure with nitrogen. It was like $35 added to the cost of my new car.

My favorite thing about using nitrogen is you only have to add a pound ever 6 months. I like to run a consistent tire pressure and this sure helps. I have the dealer add to max 44 psi with nitrogen. In late October when it's cold at night I let the tires down to the desired pressure. This way when I drive off and is 30F degrees outside, I know my tires are at 40 psi. I would run 35 psi if I lived in a icy/snowy area for safety. I also read that nitrogen can help the tires last longer.
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post #101 of 484 Old 07-22-2012, 08:09 PM
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Dunno where water could come from but the gas station where I had put in air in my tires.

Will be using my home compressor from now on.

Might have to buy me another air compressor soon, the one I have sucks, seem to take 2 minutes to do 1 PSI alone.

On Nitrogen, we'll have to agree to disagree. I'm with Whitesands on its benefits.


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post #102 of 484 Old 07-23-2012, 05:22 AM
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Back around 2002 I bought a low priced air compressor that plugged into the cars cigarette lighter. It smoked the motor on the first try of using it. I bought a little nicer one about a week later also a 12 volt model. That one also smoked after a few minutes of airing up a low tire. Evidently neither one could not take the hot summer desert heat. After that I depended on the few gas station air pump/ hoses around town, that were still for free.

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post #103 of 484 Old 07-23-2012, 05:34 AM
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Originally Posted by Oz_TCH View Post
Dunno where water could come from but the gas station where I had put in air in my tires.

Will be using my home compressor from now on.

Might have to buy me another air compressor soon, the one I have sucks, seem to take 2 minutes to do 1 PSI alone.

On Nitrogen, we'll have to agree to disagree. I'm with Whitesands on its benefits.
You may need to find a different air source. Some stations just don't have good or any moisture filter. You saw above my luck with the small electric air pumps. I wanted a nice one with a tank, but the wife said, no way, to expensive. I remember at the stations I always used a car key or screwdriver to depress the center of the air nozzle to test for any moisture. One night at a old shell station here in town I needed a little air. I tested the air hose, you would think it was more a water hose instead of air supply. I left and went to another station.

Last edited by WhiteSands; 07-23-2012 at 05:35 AM.
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post #104 of 484 Old 07-23-2012, 08:03 AM
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Nitrogen does not resist water vapor. It just doesn't contain humidity when a clean source is used......

What Zembonez said above and.......

The point again is that Nitrogen does not "resist moisture" as WhiteSands advertised.

An air compressor which is properly maintained and has a moisture filter can deliver moisture-free air into a tire.

A Nitrogen or air compressor that is not properly maintained can introduce moisture into your tires.

And let's recall that regular air is 78% Nitrogen.

For military, airline, industrial, and racing, etc Nitrogen benefits makes sense. If you're getting Nitrogen free, that's great.

I'm not wasting my money on Nitrogen since my tires don't go through the extreme conditions of military, airline, industrial, and racing vehicles that warrant paying for it.

Anyone here ever had to have their wheels or tires replaced due to internal moisture damage?

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Last edited by doznI4SE; 07-23-2012 at 08:04 AM.
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post #105 of 484 Old 07-23-2012, 10:10 AM
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Originally Posted by doznI4SE View Post
Anyone here ever had to have their wheels or tires replaced due to internal moisture damage?
With steel wheels moisture can rust the rim. Near the bead rust can cause bead leaks. However, they can usually be cleaned up and resealed. Never have had to replace a rim due to corrosion. Not an issue at all with aluminum wheels.
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