I am definitely waiting for the Pilot Sport A/S 4's to come to 255/35/21, as noted earlier they are available in canada and we have them already in 275/35/21 so hopefully it will be available soon. As someone in a mid-latitude where we only get snow a few times a year but have plenty of time below 40 degrees (I'm in Maryland), A/S tires just make the most sense as you shouldn't really stay on summers all winter but it's not worth the hassel of having dedicated winter tires for the few times you might need that extra traction. I previously had the A/S 3+, very very good tire (as is the continental DWS 06 but those aren't available in our size). Also, the A/S 4 will most definitely have a longer treadlife than P Zero, and has more than enough handling for normal spirited driving though I'm certain the Pirellis (or Pilot Sport 4 for Michelin) would have more grip at the limit, I never (intentionally) see the limit.
