Toyota shipped this P215/45 R17 Michelin HX MXM4 as Original Equipment on my Toyota Prius Hatchback, 2010, model V (as in Roman Numeral 5, not the 2012 VEE station wagon Prius that was unavailable when this cans window sticker said it was a Prius model V.
I have maintained 33 PSI front and rear, loaded the car to its max and driven long distance at high speeds with this tire. It only posed a questionable entity when snow began to fall and the road freeze on Interstate 81 in Virginia in February the last hour before heading south on Interstate 77 enroute to Charlotte, NC, and I-85 on down to Atlanta, GA. Once I was out of the mountains, the snow turned to rain just north of Stateville, and I was feeling more secure. I am, as a result, buying Winter tires this year (Michelin Primacy Alpin PA 3) and using the OEM Michelins from April 1 to December 1 from now on. These are excellent tires, and work well on the 3rd Generation Prius in my opinion. They planed a bit in the slush, and that was unsettling, hence the winter tire with the cold weather capable rubber formulation from now on. Remember a Prius, even loaded is a fairly light car, so on a heavier car these might have been more sure footed on the slush. I think the HX MXM4 has proven to be what it was designed to be, an excellent Grand Touring All Season tire with limited winter capabilities. I would buy it again.