I worked in Aviation. We used Nitrogen ONLY because we could tow it around in carts.
You did fall for the 'green stem caps' like I see so many cars carrying around now. Too damn many friends do it now for me to even bother talking some sense into them.

HOWEVER, the 'technical' people at work like myself that have an educated knowledge of gasses NEVER have them little green caps. They know better.

No offense. You fell for a very logical explanation. It'* a good sales pitch. Look how many people they 'get'.

NO GREEN CAPS HERE they went to put them on i said HELL no lol. I just figured for the highway miles i do it wasn't going to hurt me

i work in a garage that sells tires (we don't scam people with nitrogen) , but the only real benifit for a passenger car is that it doesn't leak out as quick, like when you run over a nail or if the rim starts to corrode, other then that its no different then air,

I walked out to see my all black car..with chrome rims and green caps. Turned around and explained the situation. Got black caps. I swear..they laugh when they do it to a nice car.

The tire place(*) in NY do it for Free

Dunn Tire

its nice in the winter when the tire pressure doesn't drop 5lbs

Your tire pressure will be no different in the winter with either air or N2. Summer either. It'* a myth. There isn't a tire pressure gauge sensitive enough to detect it.

If you have significant variance from winter to summer:
a) You need to check the pressure more than twice a year :P
b) The shop needs an air drier. (The water must go through a phase change to have a noticeable impact on pressure.)