first of all, lets be serious for a minute, bigger tire are better for off roading, not for snow and ice. You want a norrower tire for snow so it can cuts through it. With a bigger tire, it will stay on top of the snow making it more slippery, because you won't have road traction. With a norrower tire, It will cut a path in the snow, making it safer because you will have more traction on the road sufface. Thats a fact, the best way to go for snow and ice is a norrower tire. it's ever worse for a small light weight rig. What i do is i run 225 in the winter, and take off the bigger onces. If you don't belive this, cantact your local tire shop. see what they say. Just my opinion. by the way i'm from a place that gets alot of snow, during the winter i live in Northbay Ontario.
just my 2cents pierre