I'm not sure the statistics in the latest MAXAIR ATMI release aren't a little inflated (pun intended), however, keeping your tire pressure where it's supposed to be is still very important. It can save you gas mileage, and I suppose in turn, save emissions, as well as prevent some circumstances that cause car accidents (We've put the release after the jump so you can judge for yourself).
Hankook Tire Co. has developed an “ultra fuel efficient tire” called the fx-Optimo. Their definition of drastically improving fuel efficiency boils down to a savings of up to 3%. As is the case with many incremental improvements, t