There are many choices that fit great on the 330i depending on what's most important for you. If you are looking for the absolute best snow and ice traction, you will want to use the Blizzak MZ-01, however, the Dunlop winter sport M2 is also a really nice way to go that is not quite as good in the deep deep snow, but a much sportier dry performer that is H rated as well. If you wish to chat, let me know thanks Aaron 800.428.8355 x395