A popular idea, the nitrogen gas used to save seems to be gaining adherents. It is used as a substitute for filling air in the tires. Even retailers like Costco are offering now filled with nitrogen. The cost of nitrogen is about $ 10 per tire. Nitrogen is worth the extra money? The answer is no! The basic chemistry and physics provide the answer. First take a deep breath, hold down the middle, now let out. Did you know that the air inhaled was only 78% nitrogen? Sure, you could say that when inhaled, could not. Myths and Facts This is the largest in the examination of nitrogen with air. Nitrogen comprises 78% of all air. Only 21% of the air is oxygen. An important argument is that nitrogen and nitrogen is a large molecule to penetrate through the tire slower than oxygen. By slowing the band filtering nitrogen use the correct pressure in the tires and stay. The natural laws of physics do not support this claim. The rate of leakage of gas through a porous membrane depends on its weight and size. Nitrogen and oxygen are almost the same size and nitrogen is slightly lighter than oxygen. While natural gas seep through the tire that nitrogen leaks actually a little faster than oxygen. The implementation of a common logic can illustrate why nitrogen assumption is incorrect. If oxygen has to escape through a link to higher rates of nitrogen, oxygen, and then escaped, the left wing, especially with nitrogen. Assuming that this is the case, then over time as oxygen was lost maybe 91% of nitrogen in the air that remains in the tire instead of the original 78% are. Now for your band to reduce pressure on the right above you in your tires with a small amount of air. You actually have a small amount of air is 78% nitrogen in the air that remains in the tire, which adds 91% of nitrogen. The end result is your band is filled with a mixture of air with a high concentration of nitrogen. Following this line of thought, where the nitrogen is still behaving the same way, the less oxygen in the group escaped from the band and the nitrogen will stay more focused. Maybe you're 95% of nitrogen in their tires. As we continually repeat this process many times, you remain for ever higher concentrations of nitrogen in their tires. Over time you can finish with nitrogen only. The question is, though they will eventually nitrogen-filled tires with only repeatedly fill with air, why fill them with nitrogen to initiate and spend more money? It's just meaningless. This is just one example of how nitrogen logic of assertions are false. Of course there are many specific answers to show that scientific claims are based on myths nitrogen than scientific facts. Each has a separate article to explain. In the end it seems that you are the only law of conduct that itself seems to play every show. As is often the case, there are people who always benefit from a problem of profit. Who benefits from filling their tires with nitrogen? Not unlike the manufacturers of the equipment and the production of nitrogen nitrogen dealers who sell to the public. They make more money. Who ultimately pays for the extra profit? This right, is you.