Nitrogen gas is mostly inert, meaning that it requires more energy to react with other substances. This is important because at elevated temperatures, oxygen can react with rubber. Oxidized rubber is weaker than non-oxidized rubber, and weaker tires are not preferred.
Oxygen diffuses through rubber much faster than nitrogen. This means that tires filled with 95% nitrogen (the standard percentage of nitrogen gas for inflation purposes) will maintain pressure longer. This leads to less maintenance, which lowers costs.
Tires operating with correct pressure are less prone to premature wear. Less wear means less tires (lower operating costs) and less heat generation during ground operations. Higher tire temperatures increase the risk of tire tread delamination or blowout.
This is why I like Nitrogen. We have it in the Aircraft I fly. It is in my card and will be put in my trailer.
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2012 Ford Expedition EL
2016 28BHBE, Elite and Thermal Packages.
Equal-i-zer 4-point Sway Control, Southwire 34930 Surge Guard 30A, Tire Minder TPMS A1A
(2) Yamaha EF2000iS Generators, Micro-Air EasyStart™ 364 (3-ton) Soft Start, Garmin RV 890, GoodYear Endurance ST225/75-15 Load Range E
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