Ive been driving on Nitrogen Tires for a little more than a year now. My views:
1) The braking has improved. Its more smoother now, if you know what i mean.
2) Ride quality is top notch. Even during last monsoons, the car was very much in control,thanks to the firm-hold of the tires.
3) Get the pressure checked every month without fail. It drops.
4) Nitrotires are HIGHLY recommended on highways.
5) The correct pressure for Nitro is about 2-3 PSI lesser than regular Air.
6) Like NC stated above, stick to one place for refilling. Else, you will be dis-satisfied with the fluctuations of the pressure.
7) Nitro is more-or-less useless on Tubetype Tires. Dont waste your money.
8) And lastly, if you are still driving on Air, please do yourself a favor and fill up Nitrogen. It Dopes.
Hope this helps.
X