Yeah, nitrogen in jeep tires just don't seem right! Most air down when trail riding, so what are you gonna do if you want nitrogen when you air up?

 

Nitrogen does not expand and contract when affected my temperature or elevation. Its supposed to be moisture free too. Thats why its used in aviation tires. True our atmosphere is composed of about 78% Nitrogen, having it in your tires tho...really not worth it for servicing/airing down etc. Also, I drove my jeep off the lot (nitro filled) and two days later that damn tire light came on. I put air in it!

 

For your entertainment and information:

Air is a mixture of gases - 78% nitrogen and 21% oxygen - with traces of water vapor, carbon dioxide, argon, and various other components. Air is usually modeled as a uniform (no variation or fluctuation) gas with properties averaged from the individual components.

Gas Ratio compared to Dry Air (%) Molecular Mass
- M -
(kg/kmol) Chemical Symbol Boiling Point By volume By weight (K) (oC)
Oxygen 20.95 23.20 32.00 O2 90.2 -182.95
Nitrogen 78.09 75.47 28.02 N2 77.4 -195.79
Carbon Dioxide 0.03 0.046 44.01 CO2 194.7 -78.5
Hydrogen 0.00005 ~ 0 2.02 H2 20.3 -252.87
Argon 0.933 1.28 39.94 Ar 84.2 -186
Neon 0.0018 0.0012 20.18 Ne 27.2 -246
Helium 0.0005 0.00007 4.00 He 4.2 -269
Krypton 0.0001 0.0003 83.8 Kr 119.8 -153.4
Xenon 9 10-6 0.00004 131.29 Xe 165.1 -108.1

Sulfur dioxide - SO2 - 1.0 parts/million (ppm)
Methane - CH4 - 2.0 parts/million (ppm)
Nitrous oxide - N2O - 0.5 parts/million (ppm)
Ozone - O3 - 0 to 0.07 parts/million (ppm)
Nitrogen dioxide - NO2 - 0.02 parts/million (ppm)
Iodine - I2 - 0.01 parts/million (ppm)
Carbon monoxide - CO - 0 to trace (ppm)
Ammonia - NH3 - 0 to trace (ppm)

 

Same thing happened to my Ram. I can't tell that nitrogen does anything! And I hate those green caps!

 

I know a fellow who sells a brand of nitrogen air machine to garages etc. He told me that the water vapor in regular air can cause corrosion of the tire pressure sensor valves leading to malfunction. Of course, he's a salesman.

 

That seems to be a common misconception.

It behaves just like any other gas. It expands when heated, and contracts when cooled. Cooled enough, it contracts into a liquid.

As for the elevation part, that has to do with the pressure difference between the gas inside the tire, and the gas outside the tire.

 

The main benefit is the actual nitrofill program. Gives you roadside assistance, roadhazard protection, etc. Check your glove box for a registration card or heck with your dealer. I have it on my Rubi.

 

When I picked up my new Jeep from the dealer, they had a sign in the service write up area touting their Nitrogen service special. Only $49.99 for a full air down and Nitrogen fill.

Needless to say I still have my $49.99 in my pocket. I've driven on both and can't tell any difference. The need to check your pressure on a regular basis and occasionally top off a low tire doesn't change with Nitrogen or standard air. Properly maintained air compressors won't have excessive moisture either.

Heck - I usually top off my tires using a standard bicycle pump at home (unless the pressure is 10 or 15 PSI low - then I use my 12 volt 120 decibel compressor)

 

I was under the same impression - just used for the tpms to keep the sensors healthy (moisture free)

 

Biggest scam since bottled water. Just use air.