[JohnN]

www.getnitrogen.org

says the FAA requires nitrogen in commercial planes and that it gives 10% gas mileage improvement. The cost isn't that bad, and says I'd save $200 in fuel per year.

If it works,, why doesn't the govt. just give this stuff away????
Anybody use nitrogen and attest to it?
I'm thinking about giving it a try.

on the golf cart, you should get more miles per charge for electric....

[JohnN]

reading more,

the nitrogen molecules are larger than regular "air" so your tires loses pressure slower,

so.. if you monitor your tires regularly, it's not an issue, as I see it

"says the FAA requires nitrogen in commercial planes and that it gives 10% gas mileage improvement."



How's the mileage if they" FLY" the planes?

[JohnN]

Bombero,
also says it's used in NASCAR and Indy car racing..

regarding the planes, I interpreted it to be the cruising around the tarmac

[NYVette]

The advantage to nitrogen in automotive tires is that it is a thermally stable inert gas. This means that once inflated to a particular PSI the tire will remain at that pressure hot or cold. That is why racecars use nitrogen...race tires get very hot and are pressure sensitive for proper performance. The FAA...An aircraft has air put in the tires while on the ground at ambient temperature/pressure It then climes to high altitude with corresponding cold and low ambient pressure so the inflation pressure would change. If the plane were to land with cold tires, the tires would be underinflated because the air in them has contracted reducing pressure until they are back to the original temperature. AAA (the auto club)states that something like one in five people regularly check tire inflation pressures. If you are one of these people and almost never check tire pressure, and you switch to nitrogen in your tires, then you might see an increase in MPG. This is because the tire stays at the recommended pressure instead of slowly loosing pressure which increases rolling resistance of the tires and subsequently causes more fuel consumption...and shorter tire life. So, maintain the recommended pressure all is well, even with air in the tires. As JohnN said, "nitrogen has larger molecules". It takes far longer for nitrogen to leak out of a tire than it does for air. On a molecular level rubber is porous. Nitrogen's larger molecules have a difficult time slipping through these microscopic holes but the other gases that make up out atmosphere can more easily get through. By the way....air is 78% nitrogen.
The fat low pressure tires used on golf carts definitely suck up energy. However these same tires keep you and the cart from sinking into soft turf because of a large contact surface relative to vehicle weight. If used only as a street transport a golf cart would have increased range if tires with lower rolling resistance were used.

[chuckinca]

If you had nitrogen in your tires and had a problem with the tire I'd bet that the tire manufacturer wouldn't cover it because you didn't use the recommended AIR pressure.

[784caroline]

If your new tiers were filled with Nitrogen and over a period of time you needed to add air...can you simply add air or do you have to add nitrogen??

Will mixing the 2 cause any damage?

[JohnN]

for the above posts,,,,

you use the same recommended PSI, it doesn't change

yes, you can "top off" or mix the two (air and nitrogen) but for the full value , you should maintain something like 93% nitrogen.

Costco is one of many places starting to offer nitrogen (it's about $10/tire or so) and many tire dealers too. The ads say that some will give "free" refills after you get the first, but I'm not familiar with it.