The Michelin Energy Saver A/S tires I just purchased for our Prius v have 51 PSI max printed on the sidewalls. In every thread on priuschat, other owners say they have 44 PSI max printed on the sidewalls. Questions: 1) I know tires sizes are different between different models of Prius. Is PSI also different? Or is this a recent change for all Michelin Energy Saver A/S tires? 2) Around 42/40 or so seems to be the favorite inflation pressure for the 44 PSI Energy Saver A/S discussed so frequently on this site. What is suggested inflation pressure for 51 PSI Energy Saver A/S for Prius v? 3) In Prius v, how significant is gas mileage difference between the 35/33 pressure listed in manual and the 42/40 pressure so often suggested on this site?