I am really finding it confusing that some are reporting a quieter ride on the X-Ice than the stock 18" all seasons, since the first thing I noticed is how much louder the X-Ice tires are, especially when accelerating. They do seem happier now that the temperatures are riding around 0degC.
Although the X-Ices feel squishy under hard acceleration, I drove my M3 SR+ on a twisty country road I visit in the middle of the night to see how they handle typical sportive driving.
The temp was between 0-4 degC, slight snow and greasy roads and the X-Ices really impressed me, the M3 felt almost as capable as it did on the Michelin a/s. I could slightly slide the car with the same confidence and the front end remained planted, even on a wet road.
I cannot wait until we have some packed snow on the road, this car is going to be an absolute blast this winter. Now we just need "winter fun mode" TC for the RWD cars