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Old 08-14-2011, 02:42 PM   #1
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Nitrogen in tires myth

I finally had a chance to prove the myth that pure nitrogen in tires is a big deal. I had to fix one of the tires on my new Dodge Ram, and just filled it with regular air. We were on a long distance trip, so the tires heated up pretty good, and the pressure in the tires with pure nitrogen went up double what the one with regular air did. So I don't see much advantage to that!
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Old 08-14-2011, 03:47 PM   #2
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I agree totally. Just a ruse to get one to go to back to the dealership.
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Old 08-14-2011, 03:53 PM   #3
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The air we breathe is about 78% nitrogen so I don't see much advantage in paying a premium for 22% additional nitrogen.
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Old 08-14-2011, 03:53 PM   #4
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It reminds me...

I still have an unopened can of Expo 67 Air. (that was in Montreal in 1967)

Paid $5 back in the day, probably worth a lot more today.

Have not used/sniffed it yet.
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Old 08-14-2011, 03:54 PM   #5
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My dealer doesn't even have it there. They told me I'd need to go to a place 10 miles away.
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Old 08-14-2011, 04:06 PM   #6
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WOW, a scientific method of proof!
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Old 08-14-2011, 06:14 PM   #7
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Here's a thought...

tmmar speaks the truth: the air we breath IS ~78% nitrogen. One of the supposed "benefits" of nitrogen in your tires is that it is a bigger molecule and won't leach out like the oxygen molecule. If oxygen is leaving the tire, that means the percentage of nitrogen remaining inside the tire goes up. Let us say that the gas remaining in your sad tire is now 85% nitrogen (because some oxygen has left). Unless you use 100% oxygen to replace what was lost, you won't get back down to 78% nitrogen. Think of the tire as if it were a basket. Instead of nitrogen and oxygen, we will fill it with 78% golf balls and 22% sand. Give it a shake and a jiggle. The sand (oxygen) will leach out. Top it back off with the 78/22 mixture and you still can not get the entirety of the contents back to a 78/22 mix. You will have a high golf ball to sand ratio from then on. Or should I say you'll have a high nitrogen to oxygen ratio. Essentially, if your tires leach, you probably already have a higher than 78/22 ratio of nitrogen/oxygen inside your tires. And you didn't have to pay for that awesome technological advantage. All you had to do was wait for your tires to weep out some air.
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Old 08-14-2011, 06:47 PM   #8
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Is it not a benefit to use nitrogen b/c it has no moisture? If you have steel wheels this could be important.
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Old 08-14-2011, 07:03 PM   #9
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aaaaaaaaaaaaa We have used nitrogen in our Racing car tires for years..... and trust me the heat or cold doesn't effect the pressure settings as it does compressed air.....and we were making 1/2 lbs. changes in tire pressure to change the handling of the race car. It was not possible to do that with just compressed air !! So if you truly have Nitrogen air in your tires they will NOT increase double the original pressures. Race teams use nitrogen just for the reason....Heat doesn't effect it as much !

Note: Do you need nitrogen in a trailer tire....NO. Its not worth the cost for the use !
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Old 08-14-2011, 07:08 PM   #10
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Quote:
Originally Posted by Ovair View Post
Here's a thought...

tmmar speaks the truth: the air we breath IS ~78% nitrogen. One of the supposed "benefits" of nitrogen in your tires is that it is a bigger molecule and won't leach out like the oxygen molecule. If oxygen is leaving the tire, that means the percentage of nitrogen remaining inside the tire goes up. Let us say that the gas remaining in your sad tire is now 85% nitrogen (because some oxygen has left). Unless you use 100% oxygen to replace what was lost, you won't get back down to 78% nitrogen. Think of the tire as if it were a basket. Instead of nitrogen and oxygen, we will fill it with 78% golf balls and 22% sand. Give it a shake and a jiggle. The sand (oxygen) will leach out. Top it back off with the 78/22 mixture and you still can not get the entirety of the contents back to a 78/22 mix. You will have a high golf ball to sand ratio from then on. Or should I say you'll have a high nitrogen to oxygen ratio. Essentially, if your tires leach, you probably already have a higher than 78/22 ratio of nitrogen/oxygen inside your tires. And you didn't have to pay for that awesome technological advantage. All you had to do was wait for your tires to weep out some air.

I'm going to fill my tires with golf balls and sand and that will solve all my problems
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