These tires came as original equipment on my 2012 Buick Lacrosse with E-assist. This is the most fuel efficient car/tire combination I have been around. With about half highway and in town driving my overall mpg is 30.8. On a summer round trip between Davenport, Ia and Colorado Rocky Mountain National Park: my overall mpg average was 37.17mpg from the odometer reading and the gas pump metered gals. The car was loaded and used to give 5 adults the stop and go tour of the senic mountains of RMNP as well as the car empty weight of 4000 lb plus luggage.