Well, I waited too long, and there are apparently no Dunlop M3 WinterSports to be had anywhere (I was going to grab the 255/40-18).
The guy I spoke with at TireRack recommended Pirelli W 240 Snow Sport, but I balked because a) there are only 3 user reviews on their website, none favorable and none from RS6 owners, and b) it is the only winter tire they have in stock in that size, so I assume they just want to clear out of the merchandise that isn't moving.
What is a good alternative to the Dunlops? I don't need the greatest tire in the world, just something to get me through NYC and surrounding area winter with some decent performance.
Many thanks in advance.