Yes, but you're comparing wet air to dry nytrogen. Dry air and dry nitrogen expand and contract exactly the same due to changing temperature.

The crap a tire shop is filling your tires with isn't pure or dry nitrogen, maybe 90% nitrogen. Maybe not much more than the nitrogen you're breathing now. They're also not purging the air out of your tires beforehand. Also as the oxygen leaks out of your tires faster, the % of nitrogen will increase.

It does perform better in some ways, like slower leak rates, but most of the benefits are exaggerated or invented entirely.

One of those benefits is easy and safe portability. It can be liquified relatively easy at room temperature (~1500psi), so a lot of it can be stored in a very small space compared to the same quantity of air. And as a liquid which is basically not compressible, it's not going to explode like an atomic bomb if the bottle is knocked over.

 

Whatever you need to do to keep your tires inflated to the proper specs is the smartest move. Debating nitrogen or air is a distraction, if you don't invest in a good pressure gauge that doesn't **** you off every time you try to wedge it in past the brake rotors. Also, find an air chuck that gets into both front and rear wheels, without trying to tear out your valve stems or remodel your knuckles in the process . Like any other regular maintenance, having the right tools on hand makes it so much easier to stay up on tire pressure.

If you find yourself putting off checking tire pressures every couple weeks , or avoiding topping up to optimum pressure because it's a pain in the ****, you are very likely going to wear out your tires prematurely, regardless of what gas you chose fill them with. Tire prices keep going up and UP again, so paying attention to your tire pressures on the reg is smart money.

 

One word: angled valve stems.

I fill my tires with a precise mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. Only troglodytes use common air these days.

 

going all the way back to the original post from 2009, that web site sucks

i tried a cheap tpms a few years ago. they were valve stem caps that contained a sensor and transmitter. they were garbage. they let air out themselves, thus increasing my required effort to maintain air pressure.

 

Yeah, but they let you know about it, right?

 

Amazing coincidence - I use exactly the same stuff in my tires, but I bet I have you beat - I get mine for FREE!

 

I have a special tank in my garage in which I mix and compress my own, so...

 

Me too. However, I get a few more gasses mixed in during taco night.

 

Light a match!

 

I know this is an old quote but new people are reading this so I figure I should address it. While this is partially true the main reason people use Nitrogen is because of the lack of moisture it resonates under rapid fire. Oxygen gets extremely cold and causes excessive moisture in barrels and on the bolt which can result in ball chops or freezing of the internals of the marker which is never a good thing seeing top end markers also have electronics integrated into the marker.

Also the tanks used for Nitrogen last longer and also hold a considerable amount more pressure then the oxygen Tanks so there is less time at the refill station.

 

And, don't forget the troglodyte thing.

 

I use Nitrogen because it's better......... it's better because the tank is closer to the bike most days than the air hose which contains 79% nitrogen....
either way a pricy liquid filled 1/2 lb incremental pressure gauge is used to set tire pressures cold....and that I think is more important than the gas used.

 

78.09% Nitrogen.

 

I live in Texas, less smog, more Nitrogen less other gasses.....LOL

 

you guys are full of methane