Complimentary nitrogen is nice as it holds up better than regular

[theking]

...air  :

[theking]

Since nitrogen molecules are bigger than normal air molecules, it is harder for them to leak out. This means a tire filled with nitrogen will maintain air pressure longer. Therefore, they say, you'll roll on tires that are always properly inflated, resulting in better fuel economy and longer tire life.

[Visualmon]

I'm worry about the reckless driver who does the damages toward other designate drivers. 

[VillainousHero]

air is already over 75% nitrogen. 

For the normal driver, they will never see any improvement.

Unless they have hot brakes and their tire is temping at about 300F.  Now that nitrogen air will probably help out a little better than straight air.

[Cali Guy]

I’m glad Costco has designated air pumps, it used to be a hassle to keep asking employees in the work area to hand you the complimentary n2 hose.

Tires hardly ever lasted their intended warranty at least in my experience and shops make it their mission to not honor the warranty even on a bad tire. I’m just glad to never experience a blowout even when a tire shop messed with my tires.