Rubber News is a publication that caters to the tire industry (wow, who knew rubber was such an important component in the tire making process). There was an article in their January 11th 2010 edition that touts nitrogen as a safety and performance upgrade. This is one of the best articles I have seen about nitrogen. It does not overstate the benefits and warns against doing so. But the article points out that there are tangible benefits, and that the tire makers should be capitalizing on these benefits.