I've had two sets of Bridgestone Ecopia tires, both on Honda Insights. I was into "super mileage" at that point, and can say they perform well in the wet (120 mile commute in Western Washington state), they were fine for handling, wore as good as the Michelins they replaced, and added 3-4 mpg. Not a lot of experience with snow, though. Keep in mind that the mileage increase was with a car already getting over 50 mpg, so I don't know how much, if any increase you would see with a Murano. I liked them, and have been considering them to replace the Goodyear Eagles I currently have.