Nitrogen in tires

[Flavor 987S]

The key is DRY AIR. In general, nitrogen filled tires have a dryer air content. Dry air means a greater tire pressure consistency over a wider temperature gradient.

I like the nitrogen filled tires for winter storage (55-58 PSI). I bleed the excess air in the spring prior to the first drive of the season. Bleed a little bit more as temps increase with the summer driving season (for about every 10 degree temps change, tire pressures move 1 PSI, assuming dry air). My tires pressures are very-very steady and consistent throughout the driving season. In late fall, when air temps start to plummet, I only require a couple tire pressure adjustments (then I use good, normal, dry, shop air).

Prior to winter hibernation, I over fill again with nitrogen, never charged, I just throw the kid at the tire shop a $20 tip, and drive the 6 block home very slowly. During the winter hibernation period, 4-6 months (depending on which car), the over filled tires might lose 1 PSI. Again an advantage.

Works for me the past 5-6 years.

Again, the key is dry air.