http://www.cmu.edu/cmnews/extra/050921_tire.html
"Want to save hundreds at the gasoline pump? It's easy. Instead of hunting for the best price in town, try checking the air pressure in your tires. Proper air pressure results in better gas mileage, which at $3 per gallon could save you as much as $432 per year, according to an informal study conducted by Carnegie Mellon students last spring. "
http://www.fueleconomy.gov/feg/maintain.shtml
"You can improve your gas mileage by around 3.3 percent by keeping your tires inflated to the proper pressure. Under-inflated tires can lower gas mileage by 0.4 percent for every 1 psi drop in pressure of all four tires. Properly inflated tires are safer and last longer."
Compare this to the $30 McCain's summer gas break gimmick he proposed that would have given oil companies millions in additional tax breaks...remember?
Or McCain's oil drilling gimmick that MAY give us some oil in...let's see...10 years?
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