i just ordered the Bridgestone Blizzak LM-25. Guy at tirerack reccomended them. The tread is REALLY meaty. I bought a set of brand new 18 inch bmw tires and wheels on ebay for 1700 shipped. i sold the rubber for $600 before i even got the tires. You can get knock-offs for a little cheaper but i bought m6 replicas a few years back and was disappointed so i spent a little extra. I paid about 900 for the snows, 1100 for the rims and 200 to have em mounted. a little expensive but the car will still look stock.
2008 SSII DCT M3/Peapack/Parsippany NJ