[Msquared]

You may not need all-seasons in Oregon. It depends on your exact climate, but in general if the temps don't get way below zero a lot and you don't drive in snow/ice, you can keep using summer tires. I believe the coastal parts of Oregon fit that description. Now, the flipside is that my impression is that some of Oregon is also frequently wet (probably the northern part near WA?). In that case, I'd want a great rain tire. The best two rain tires you can buy for street use are both summer tires: the Michelin Pilot Sport 4S and the Continental ExtremeContact Sport 02. They are both better in rain than any all-season tire.