I know this thread is Nokian vs Blizzak but I wanted to comment on the Wintrac since they are not common. I put a set of 235/60/18 on my stock rims last winter and they are terrific. I picked the narrower profile based on discussions here on Xoutpost.

We had some heavy snows in the Boston area last winter and the X5d tracked like a tank. Dry condition highway driving is smooth and quiet, much better than the Michelin RFT that they replaced.