got the revos on tonight at costco and they fill them with nitrogen instead of air what do you guys think about that

 

Cant be very cost effective. They must have nitrogen delivery trucks lined up outside.

 

what would be the point of that?

 

nitrogen contains no moisture as does the air from a compressor. and as for cost you can fill alot of tires that need 35 psi from one 3000 psi cylinder.

 

they say it helps with fuel efficiency and handling hoped someone would have more info on it

 

What do you do when you need a couple psi of air in a tire? Do you just add air or do you have to make a special trip back for nitrogen?

 

I think that someone is pulling your chain. Truck tires do not need to be filled with nitrogen. The only tires that I know of that require nitrogen are very high performance aircraft (SR-71), due to the extreme temperature changes. How in the he!! will filling your tires with nitrogen help fuel economy? The air in our atmosphere is 70%+ nitrogen, 20% oxygen, the rest is other gases, most of which are lighter than air. Pure nitrogen is heavier than air, so your tires are ever so slightly heavier. This will not help fuel mileage. The only benefit of nitrogen is that it does not expand and contract as much as air due to temperature changes. When your tires need a couple of psi just add air, no big deal.

Joe

 

Actually all aircraft tires in the Air Force use nitrogen rather than air as a prefered method for servicing. But it is for the near zero moisture/corrosion level, and the fact if you have a leak from other aircraft systems (fuel, hydraulic, etc.) you don't have pressurized air to help feed a fire, when the tire deflates/explodes (nitrogen is an inert gas, won't feed fire). I'm currently working in an air force wheel and tire shop for a couple of heavy airframes.

And yes if your tire is low, just use air. Mixing it won't hurt anything. That's what we use when nitrogen isn't available.

 

nitrogen is also used in civilian jets. it is dry so therefore no corrosion. jet tires are either aluminum or magnesium. and like someone else said the pressure does not vary as much as air. if they go low top off with a compressor. i think there is a benefit to nitrogen but i think it is also a sales gimmick moreso. i have access to nitrogen but use plain old compressor air.

 

id never heard of it before i guess its new at costco they will top em off free they also rotate @no charge every 6000 miles ill let yall know if theres a change in fuel economy i also found a web site that says it'll help the tires last longer so we'll see what happens

 

Costco has some strange policies. I guess it's so that they don't fill the tires to one pressure when its warm and have people come back complaining of "leaking tires" when it gets cold. When I went there last month I wanted to buy two tires. They told me they if I only bought two they could only mount them in the rear of the truck. Something that it was safer to have the new tires in the rear. I wound up not buying from them and went to a place that would put the tires where I wanted them.

 

lookin for a crazy explosion. I would like to see what happens if they blew out and your rims sparked.

 

no explosions nitrogen is non combustable

 

It's just dry, lack of moisture is the main benefit.

Many people claim that they also have to re-fill their tires less, because supposedly the larger nitrogen molecules won't seep out or the porous rubber as quickly as regular air. But seeing as air is 70% nitrogen anyways, there is some debate about this. the lack of moisture is the main benefit.

Here's what Yoyo tires says:
http://www.toyo.com.au/tech_info11.html
Mainly, "All conditions being the same, the difference in tyre running temperatures when comparing nitrogen with compressed air for tyre inflation is due to the presence of water in compressed air more than any other factor. "


And here are some good POVs from people much smarter than me:
http://theoildrop.server101.com/ubb/...;f=44;t=000109

 

Well if this whole nitrogen thing is better for the ires, why arent using nitrogen. I wnat my truck to have the very best, so how much hurt will air put on the tire vs nitrogen? is it a noticable difference, or a statistical difference?