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Old 09-20-2010, 05:04 PM   #1
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TT tire inflation question

Hello all, when we ordered our 2604 Saturday the RV salesman told us that the new Rockwoods was being delivered with Nitrogen inflated tires.
So what happens when you need to add "air" to increase the tire pressure?
Do you have to keep using nitrogen? can the two be mixed?
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Old 09-20-2010, 05:49 PM   #2
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According to all of the hype concerning nitrogen filled tires, you should never have to add more pressure to your tires....yeah, right.

You need to decide if you are going to pay for nitrogen fills or just use the 80% nitrogen that comes out of every air compressor.

The 2 can be mixed with no problem. Any time you add air from a standard compressor, the total nitrogen percentage will drop a little....depending on how much air you need.

A nitrogen fill will only give about 95% nitrogen at best, and air is 80% nitrogen. Some places charge $10 per tire to get that extra 15% nitrogen. Ain't worth it in my book.
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Old 09-20-2010, 09:22 PM   #3
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Like Chap stated, it's all Hype.

Where in the world are you gonna find Nitrogen down the road when you need it? If your tires pick up a nail or road debris; and punture a hole, the Nitrogen will leak out just as air does.
The big deal with Nitrogen is that you the inflation pressure remains the same, cold or hot(so they claim).

Read all about it.
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Old 09-20-2010, 09:43 PM   #4
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Nitrogen mixes with oxygen in the atmosphere, so mix it in the tires. You won't find many nitrogen pumps along the way if and when you need to add air to the tires.
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Old 09-20-2010, 11:36 PM   #5
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I went with nitrogen on ours, I filled it just before the honeymoon in 2007. Three years later I had lost exactly one PSI...and I'm sure that come from checking them every 3 to 4 months for trips. The tires are at 50 PSI.
Say what you want...nitrogen works folks!
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Old 09-21-2010, 04:58 AM   #6
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Nitrogent absolutely does work. I don't think there is any hype about it. It does what it does. There is no smoke and mirrors to it nor is it rocket science.

Do I use it in my trailer? no. Do I use it in my truck? no. It's simply not convenient.

I do however use it in all my motorcycle tires and in all fairness to the situation, I have full access to nitrogen on a daily basis at work.
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Old 09-21-2010, 06:25 AM   #7
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Google "nitrogen fill tires", this is interesting.
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Old 09-21-2010, 07:04 AM   #8
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Quote:
Originally Posted by jackhartjr View Post
I went with nitrogen on ours, I filled it just before the honeymoon in 2007. Three years later I had lost exactly one PSI...and I'm sure that come from checking them every 3 to 4 months for trips. The tires are at 50 PSI.
Say what you want...nitrogen works folks!
Bought a new trailer in '06.

Tire were filled with AIR. (imagine that)

Towed it for 2 1/2 years without a problem.

Had to set to proper inflation maybe a couple times.

Sold it to a friend and here we are, 2 years later, still no problems.

Those poor old Carlisle Tires, filled with regular everyday air are still going.

What's wrong?
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Old 09-21-2010, 08:34 AM   #9
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Test the pressure in your tires after they heat up on a drive or on a cold morning. You will see a difference in pressure. Not saying it is enough to justify the nitrogen, but I do feel like if you can keep a tire from expanding and contacting with temperature changes, it has to prolong the life of the tire.
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Old 09-21-2010, 09:43 AM   #10
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As a mechanic for many years, the only advantage I can see to nitrogen is lack of moisture. Few air compressors have adequate moisture removal filters. This means you are putting a small amount of water in your tires, and this may lead to deterioration. Basically though, as many have stated in other post, if your tires are 5 years old they need replacing. Not because of the air inside, but because of the air and sun outside. As for tires building pressure when hot, remember they are designed to do that. That is why for many years the inflation recommendations are for COLD inflation. Never adjust tire pressure on hot tires. Rule of thumb is one pound for 10 degrees.
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