ok guys is it air or nitrogen for your tires and why?

 

air. Just because its easy.

 

Neither.

CO2. FAR more fills than Nitrogen.

 

Well In That Case Why Not Just Put Some Spray Foam In There.. Or Maybe Some Elbow Grease... Or Sand... Oh! Or Maybe J-e-l-l-o... Or Maybe We Could Fill Them With Pablo Escabar's Finest And Run It Across The Border.. All Of Which Would Be Way Better Then Free Air!!!....

 

Most tire shops will fill them with Nitrogen for about 20 bucks. It has it's advantages. It will not expand and contract as much as air does. Check your tire pressure sometime with it in the sun vs a 40 degree morning..huge difference. I've had to reset my low pressure light twice on my 06 Taco because of this since it's started getting colder out.

 

Air is 78% nitrogen, 21% Oxygen, and 1% Inert gases. So It should make too much of a difference between "Air" and "Nitrogen" But the temperature will always play a part in the pressure.

 

nitrogen is just a way for them to charge you more at tire shops, unless you have tpms or are really worried about your pressure or want it to get the best milleage possible (prob wont notice a diff as long as you do keep some what of an eye on your tires an never let them get to low) then i would just stick with air. after all, its free, at the most 50 cents at a gas station

 

The pressure of air and nitrogen, and all other gases for that matter, increases the same amount with an increase in temperature. Boyle's Law states that with a constant volume, which we assume a tire is, the pressure of a gas is directly proportional to the temperature. This applies to all gases. Race cars use nitrogen because with a pure gas the pressure rise with temperature increase is more of a straight line. With racing tires the pressure affects the diameter of the tire, which affects handling. With street tires this effect is negligible.
One slight advantage nitogen has is it's usually drier than air, so there's less chance of steel wheels rusting from the inside. Also nitrogen molecules are slightly larger than oxygen so pure nitrogen diffuses through the tire slower. It might mean you have to check your tire pressures once every 6 weeks instead of once a month.
If you wheel your truck, and are always airing down and up, then nitrogen isn't feasible anyway.

 

haha, true there...as we just went over that in my chemistry class.

 

Does the Nitrogen pressurize differently than the regular air, or Co2?

 

Okay. So We are talking about several things here.

For one, eric-the-red is dead on. If you are paying more thinking that nitrogen or whatever doesn't change pressure when air does, you are getting ripped off.

Second, when i posted that I used CO2, i was under the impression we were talking about trail head fills, not dealership or tire place fills. I use CO2 at the trail head, and air everywhere else.

Why CO2 vs a standard air compressor at the trail? Sure, air is free, but CO2 is a WHOLE lot faster. The only air compressors that keep up with CO2 are York style belt driven comps, and I refuse to give up my AC.

As for fills on Nitrogen and CO2, both are stored in liquid form. However, CO2 molecules are almost double in mass from Nitrogen Gas molecules. This means it takes less gas to get to the same pressure, using the ideal gas law, and turning molecular mass into molar mass into moles of gas.

 

NO, nitrogen in nitrogen bottles is NOT in liquid form.
Liquid nitrogen has to be stored very differently than compressed nitrogen (gas).


CO2, as stored in CO2 bottles IS stored as a liquid.


Fred