I have had the Michelin X Ice 255 on all 4 corners for about a month now. They fit fine and do well in the snow, but don’t match the playfulness of the car when it is dry/cold. Under hard acceleration you can feel the rear tires squirm and struggle for grip.
I wanted the Alpin 4s in 265 in the rear but could not source any. I had the Alpin 4s on my Focus RS and CLA 45 AMG and they are definitely the better dry performance tire and do well in the snow too.
The X Ice are a decent plan B but they are just that, if you have the ability to wait I would try and get the Alpin 4s in 265 on the rear which I think would be a much better match for the 4BW than the 255 X Ice.