Hey, don't know if anyone has heard of this, today was my first, looked it up and couldn't find too much info. I was talking to a guy at work who went on a road trip over the weekend and before leaving had his tires rotated and filled w/nitrogen. He swore up and down he averaged approximately 80 miles more per tank of fuel, maybe more, wasn,t sure where he was at and said he filled up before he normally would. He wasn't sure what it came out to per gallon, but he drives a chevy pick-up.
With fuel prices climbing as we speak every extra mile counts, wondering if this guy knew what he was talking about, and think of the added milage on the bikes if its true. Has anyone used the nitrogen?
If you have the right air pressure in your tire it will give you the same gas mileage as a tire with the right nitrogen pressure in it. The main differences are that it is harder for nitrogen to leak out than it is for air and nitrogen doesnt contract or expand as much with a change in temperature as air does. Leaving you with a tire that has the proper inflation pressure most of the time which promotes good gas mileage and even tire wear. On the other hand if you kept on top of your air pressure all the time you would have the same result.
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2007 VRSCDX since
November 28, 2006
Air being 78% nitrogen and 20% oxygen (2% other stuff), I think someone is making $$$ selling people on the idea that filling tires with nitrogen is beneficial. Like EZ says, just stay on top of your tire air pressure.
Nitrogen leaks out as easy as air does - A bum tire is a bum tire, so mater what you put in it, it'll find it's way out.
What nitrogen does do is keep the same pressure in hot tires as cold. Air expands as it gets hot, and that 35# you had as a cold reading can get up to 5# and more after some miles of riding, especially on a hot day and/or with some agressive driving (like twisties).
With gas prices being what they are people are starting to over inflate tires, which you can on cars to some degree, for less rolling resistance. But keep in mind that a car tire's traction surface is basically flat and wide, vs. the traction surface of a bike tire is curved and narrow. On a bike you're getting less rolling resistance, but you're also losing grip, and with only two tires with much narrower traction pad can lead to very bad things.
Nitrogen is much more stable when heated, so that 35# PSI stays 35#, and the rubber stays on the road. Also, your ride stays the same. I've noticed my bike feels and handles differently with air in the tires after I've built up some heat. With nitrogen the tires maintain the same riding properties throughout the ride.
So nitrogen is not going to give you huge savings atthe pump or outragoeus MPG. But it is a nice little thing to have in your tires.
If you have the right air pressure in your tire it will give you the same gas mileage as a tire with the right nitrogen pressure in it. The main differences are that it is harder for nitrogen to leak out than it is for air and nitrogen doesnt contract or expand as much with a change in temperature as air does. Leaving you with a tire that has the proper inflation pressure most of the time which promotes good gas mileage and even tire wear. On the other hand if you kept on top of your air pressure all the time you would have the same result.
my study of topic found same as you say EZE its just doesnt leak out and stays the same at diff temps, but does not I say NOT increase mpg
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nitrogen for tires 
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