i had a set of pirellis 225/ 40 zr18, they were Pirelli Pzero Nero M&S. it IS classified as an all season, and it is a great tire for just about anything but doesnt do too well in snow, i really loved them, i would go with size 245/40zr18 when i get them again. if you really want a perfomance tire you should have dedicated winter tires. right now i have toyo proxes 4 size 225/45r18, and i cant really say its a "bad" tire but i really liked the pirellis a lot better. the toyos just dont get "sticky" when they are warm, and dont have as great of traction on wet roads. i drive 1800 miles in 30 hours usually once a month, and one thing i noticed right after putting on pirellis last year is after drivin normal 100 miles or so, if you stoped somewhere and felt the tread of the tire, whe it was warm it would feel "sticky" where as i can do a burnout with the toyos and get them heated up and thay still dont stick.
this next time around i think im gonna try hankook ventus evo 12, and see how i like those, if those dont work out im definately going to go back to the pirellis.
actually, on second thought i originally had stock 17" chrometech wheels and the 245/40 is the match for that, i think its been said that 245/45 18 is a good match for the stock 18 size of 225/50 lol.
so my advice is if you truly want "performance tires" spend the money on 2 sets of tires, get pirellis for spring/summer/fall and get a set of steel wheels with snow tires for winter, being from WA i imagine you could probably use some.
ever heard of tirerack.com?
thats where i bought the pirellis from for $134ea i beleive.
and IMHO i just do not like "all season" tires, on dry and wet roads they can be OK, but when it comes to snow they still suck. i work all over MT, UT, ID, CO and WY so we can see some pretty bad winters here too.