nitrogen filled tires.....how do you add?? is air OK?

Look at the bottom of the compressor main tank for the water drain.

Tires always look good on the inside. It is the sun and pollutants that rot the outside. FUD rots the inside because it is the unknown.

I guess I'll have to start using N2 now to keep that nasty Oxygen out of my tires. But what will I do now to keep the O2 away from the outside of the tires??? :)

Dtank wrote:

jake2250 wrote:
Let me pass on something I learned in "Tire Collage"

"Collage"??...:@


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Umm, yeah,,its a French college!! Duh!!

I'm continually alternating the rear tires on my truck between 50 and 80 psi depending on whether I am towing or not. Not about to go looking for nitrogen. Depends on the humidity where you live I guess but I get little or no moisture from my compressor's tank when I check the drain. I painted the inside of my trailer rims with calliper paint so I am not concerned about the wheels corroding internally.

jake2250 wrote:
Let me pass on something I learned in "Tire Collage"

"Collage"??...:@


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mileshuff wrote:

myredracer wrote:
They don't have an air dryer of any sort and nothing to drain condensed moisture from the lines.

Most shops use a T in the air line with a trap installed. Not completely dry but does remove a considerable amount of water as well as any oil coming from the pump.

No traps anywhere. All plastic piping. No "upturns" at the horizontal run like in this diagram. Nothing to cool the air to remove moisture. The horizontal run around the shop did not appear to have any slope to it (but may have) and the drops at each workstation and piece of equipment dropped vertically from tees with no provision to drain moisture at the bottom before going to the workstations/equipment (ball valve at bottom & straight into equipment/tools. Quite surprising to see a major tire shop have something like this. I just installed a compressor piping system in my home shop and did a lot of research on how to get clean & dry air and found there's a lot more to it than just running a line straight off a compressor to tools.

I'm wundering, if I line the tires with some kind, of impenatrable barrier, fill them with helium and seal the compartments real good and fill them with helium, if i would get better mileage. Maybe mix in a little NO2, so we would know if there was a leak.

myredracer wrote:
They don't have an air dryer of any sort and nothing to drain condensed moisture from the lines.

Most shops use a T in the air line with a trap installed. Not completely dry but does remove a considerable amount of water as well as any oil coming from the pump.

I was just at a big name tire shop and got looking to see what they do for their compressed air system. They don't have an air dryer of any sort and nothing to drain condensed moisture from the lines.

You might want to actually go check the compressor, usually right where the air lines come off the tank is an air dryer, I have one for my home compressor. It keeps moisture out of my air tools. Also if you paint using a compressor water droplets in the air will screw up a good paint job! If they use air tools,, be assured their system has an air dryer in it.

pitch wrote:
How do they purge the air that exists at atmospheric pressure when the tires are initially mounted? That's right, they don't.

Good question so I had to go looking to find out and there is a way to purge the air. From Get Nitrogen Institute:

The most common method used to fill tires with nitrogen is to first purge the tire of the existing air, down to 3 psi, and then refill the tire with nitrogen. This purge/fill cycle is often repeated to achieve the desired level of nitrogen purity (GNI recommends 93.4 percent in a typical passenger tire) and to remove any moisture in the tire. Any nitrogen dealer will have the nitrogen generating equipment that produces the nitrogen and a device that purges your tires of the air inside them.


I was just at a big name tire shop and got looking to see what they do for their compressed air system. They don't have an air dryer of any sort and nothing to drain condensed moisture from the lines.