I'm getting ready to order a 335is and live in Washington DC where we get weather in the 20s and snow a few times each year (last year being an extreme exception with 40 inches twice). I really don't want to have to switch back and forth to snow tires. People have condemned all-season tires on this website but just how bad are the new ultra high performance all-seasons, such as the new Pirelli PZero Nero or the Michelin Pilot Sport A/S Plus, relative to a really good summer performance tire? I plan to move next year to the San Francisco Bay Area where a summer tire will be good year-around, but even there one can encounter cold weather and snow in the Sierras. Would it be sacrilege to put all-seasons on a 335is?