Originally Posted by JonZoidberg
Is nitrogen a scam? They say it will leak slower due to the larger molecules, but having not slept through 10th grade chemistry I know that nitrogen is a large component of the atmosphere, but they support it enough to guarantee it with unlimited free refills. I wouldn't have sprung for it if Sam's wasn't fitting the bill.
Some believe that it is, nitrogen is just more temperature stable than air (even though air is mostly nitrogen) and has less moisture. You will find that your TPMS will not be set off during drastic temperature drops.