As of November 1st, 2013 studded snow tires are now street-legal on Washington roadways. The studded tires will have to come off at the end of March, when the snow and ice have hopefully melted off the heavily traveled roads.
The state Transportation Department would like to see studded snow tires banned all year-round because of the damage the studs do to state highways.
The department says that drivers at higher elevations should use traction tires and carry chains. When chains are required on passes, studded tires alone will not meet the requirement unless your vehicle is an all-wheel drive vehicle.