Originally Posted by manisusmc
nitrogen is lighter than regular old air, but it's no that much of a diff, I mean the air we breath is around 78% nitrogen
Hate to break it to you, but atmospheric air contains 78% +/- N2 with about 21%+/- O2. Pure nitrogen (N2) is heavier than oxygen (o2) Not sure if I'd want to fill my tires with 99.5% Aviator Breathing Oxygen, highly flammable