If you're not already a member of the BMWCCA...join now. They have mountain twisty tour drives a few times a year. Also, download the BMW ultimate drive app for your phone (assuming you have a smart phone). People have loaded locations of 127 suggested fun drives in the Seattle area.
09 E92/Montego Blue/Black leather/Dark burl trim/6MT/Premium/Sport/19" Matte Black Avant garde M310 Wheels/Nav/Comfort access/COBB stage 1