I cannot believe there are no reviews on this tire anywhere online!
When I was searching for winter tires for my M3 I really wanted a tire that would get me through light or heavy snow, but with a strong emphasis on not sacrificing dry cold conditions.
I was tempted to go with a Blizzak LM-60, but there were a few reasons I decided not to.
1. The factory recommended tire for the M3 is a Pilot Alpin 3 (since 2008), this could be considered the newest update, so that held some weight.
2. I could not break myself away from the fact that the PA4 is V speed rated and the Blizzak H rated. Am I going to drive 150 in the snow? no I am not... but the Pilot Alpin is designed for speed, so that has to trickle down for every day driving performance.
3. I also like the Assymetrical design of the tire and the snow sipes which are angled (most likely for snow turning performance, and I feel this really helps the snow grip performance when turning.
The size I chose was 245/40 r 18 which I decided because I wanted to have the exact same size front as the summer setup. The factory recommends 235 but this has not at all been an issue.
The PA4 is wider than other 245 tires by just a few mm's according to the specs.
I mounted them square on 4 identical 9.5 inch wide wheels for rotation purposes, and there is enough side wall tire that the wheel is not sticking out.
They drive safely in ice/snow and grip well, but have a tremendous amount of grip in the cold dry, and do not at all feel like they sacrifice steering response or grip from the factory summer sport michelins. (when driving in the cold)
I chose the Michelins PA4 over the LM-60 because to me COLD dry and wet driving performance is more important and actually measurable to me. Face it, if the snow gets deep enough eventually any low car is going to get stuck, so for just a few inches of snow a few times a year, why give up all of that FUN dry grip performance?