What is the general range difference between a Primacy, Defender, and CrossClimate or Pilot Sport All Season 4 tire?  This compares new tires to new tires.  When replacing a worn tire with a new tire the range impact will be increased.
Primacy tirelines generally have 10-15% range advantage over other Michelin offers, such as Defender 2, CrossClimate2 and Pilot Sport All Season 4.