Here's a link to a great article from Dan Dvorak, and a quote:
"This is our 10 step program that predictably yields fifteen hundredths. (.15 ET reduction) We know this because we have done this before, time after time. We call it “in the bag” Add to this the radial tires and there is the potential for 3 tenths “all of a sudden” This is how the big shots do it. You should be a big shot too!"
http://www.dvorakmachine.com/tech_La...eHeroics.shtml