I'm going to take delivery of an S5 in a couple of months. I live in Chicago.

I need to select 18 inch winter tires. I'm trying to decide between the Dunlop Winter Sport M3 and the Bridgestone Blizzak LM-25.

How do these two tires compare to each other and can any of you suggest a reason why I should prefer one to the other for an S5 in Chicago?

Thanks in advance,

-- Rich