Some real data - marvelous. The best two tires in their test managed 4-5% better MPG than the OE Integritys which is similar to the results I saw with my Nokian WRs and again with my Nokian WRg2s (neither are sold by Tirerack so they were not tested). See the attached Excel spreadsheet for details. JeffD
Already two other threads on this topic: The lengthy one: http://priuschat.com/forums/gen-ii-...ity-against-energy-saver-ecopia-fuel-max.html The shorter one: http://priuschat.com/forums/gen-iii...omy/68891-fuel-efficient-tire-test-prius.html
Energy™ Saver 195/55R16 87V Enlarge Sidewall: Black Sidewall Model # (MSPN): 17518 Benefits Go Farther with Each Tank of Gas Up to 10 feet Shorter Stopping in Wet Conditions2 Eco-friendly, MICHELIN® Green-X® tire Tire Details