First, many thanks to those who came before me and posted their impressions. Thanks to my fellow AudiWorld'rs (A4.org'rs?) and TireRack availability, I quickly narrowed my winter tire search to this Pirelli, the Dunlop WinterSport M2, and the new Michelin Pilot Alpin. Since the Pilot Alpin is new, I decided against it until folks have more experience with it. I then narrowly selected the Pirelli over the Dunlop on the advice that the Pirelli would be slightly better on dry roads, and the Dunlop would be slightly better on ice. This decision was driven by the knowledge that I like to make cross-country driving trips in the winter from my Boston home to ski-country in Wyoming (Grand Targhee!)

I highly recommend the Pirelli W210A winter tire.

I have put 7000 miles on these on my A4 so far this winter in all conditions: light snow, deep snow, ice, slush, rain, dry roads, high speed, etc. They are terrific in the snow. I can *imagine* having better snow traction, but I *can't* imagine wanting any better snow traction than they, along with quattro, provide. Acceleration, cornering, and braking are all great in snow. On ice they are much better than any all-season tire I've used, but I wouldn't say they are a good ice tire. Traction still disappears on ice, so I'm careful. Interestingly, they seem to corner better than they stop on the ice. They are good in the rain, with good cornering, traction, wet-braking, and hydroplaning resistance. Nothing like dedicated summer tires mind you, but still good. Hydroplaning resistance is the biggie in the wet for me, and they have shown *no* tendency toward hydroplaning. On dry roads they definitely don't have the cornering grip of summer tires. To me, this is the compromise for having winter-weather performance.. They're not scary or anything, they're just not in the league of my Dunlop SP8000E's. At 36 psi all the way around, the car tends just slightly towards understeering on dry pavement. Turn-in is ok, not great, not horrible. On-center tracking is *excellent*. Road noise is excellent, they are very quiet - slightly louder than the SP8000E, but absolutely not noticeable to me. At high-speeds on both dry and wet roads, I have confidence in the tire; it feels solid.

I made *exactly* the right choice of winter tire for me, provided I can get 25K miles out of them. Time will tell...