Originally Posted By: Hokiefyd
Michelin tires consistently produce rolling resistance that is either class-leading or close to it. Folks rarely take that into consideration when considering the total cost of ownership (TCO). Though 12-15 miles per tank isn't much of a difference, it may add up over time. Some folks report 1-2 MPG deficits, and that cost DOES add up over time.
The common initial response is, "they're too expensive, I'm not paying that for tires!" Well, even when buying cheaper tires, sometimes you ARE paying that for tires, when you consider that tread life and fuel economy are often hidden elements of TCO.
ediamiam, you may elect to increase the inflation pressure of the P4s some. You may get back some of the MPG you lost to the Michelins, and they'll probably handle more securely as well.
12-15 per tank is about 1 mpg decrease. assuming that is slightly over 1/2 gal of fuel, that could be $75 annualized assuming weekly fillups which is normal for me. i've also done the air pressure thing - it is higher than with the michelins.