[MrRoboto]

Originally Posted by EmmDrei

It has nothing to do with "anymore", it's simple physics.

The wider a tire, the less weight per cm² will be transfered to the surface of the road. And in deep snow, that is a clear disadvantage. The less weight is loaded on the tire, the more the tire will stay on the surface of the snow. The gills/fins (I don't know, what the correct phrase in English is) in the tire cannot "bite" into the snow. The more they are pressed into the snow, the more they will. That's the simple reason, why the cars in the World Rallye Championship are still running very narrow wheels, when they drive on snow and ice.

I had the Michelin Alpine on the M3 and found the tire so awful, that I didn't drive the car during the winter. On Pirelli Sottozeros a different story.

Something to bear in mind: If you buy a winter-tire that can legally run 240km/h, that same tire will need harder rubber than it's brother that is only legalized for 210km/h. Harder rubber means less grip on snow. As a rule of thumb: the faster you can legally run a winter tire, the worse it will be on snow and ice. I'll probably run 210 Sottozeros (as tires that are 245 wide) on the optional M3 winter wheels (cause I have a set of those anyway).

You are exactly right.