Nitrogen over Air - can you feel the difference?

[Camshaft]

As this video shows if the condition are 100% clinical then yes there could be. but I doubt many of us will notice it.
http://youtu.be/knHeUF9JLzg

I once had tyres fitted in Costco and they filled with nitrogen. noticed no difference at all..

Back to the hand pump and pressure gauge at home I think.
Some people will try to sell sand to the Arabs and ice to the Eskimos