M+S can be misleading
 

I lived in Southern Indiana for a while. The ice storms were insane, about the only place you could drive was into a ditch. That was after spending an hour chiseling the ice off you windshield.

Here is a link to Tire Rack's definition of M+S tires.
What is a Mud and Snow Tire? - Ben's Blog | Tire Rack

We had the worst ice storms i've ever dealt with last year, did not cause that much of an issue though since our winter roads are ice/snow packed anyhow. with dedicated snow tires (studdless and studded) i had no issues..then again we don't shut anything down for a little ice or a little snow...its just another day.

I'm going to be replacing my horrible stock pirellis with Coopers.

Thinking of tracks for my f350 or worse case a smart car with tracks. .

http://youtu.be/c9CLX4F58EM