i've run ground control coilovers on my car since a month after i bought it (march 03), and just changed to the tein ss set last spring. never had a problem with seizing or anything. only thing i have noticed from winter diving is that because of all the salt/sand they put on the roads, it really bungs up all the threads with crap. what i do to ensure the ride height still adjusts smoothly is clean them every spring and take some vaseline on wax paer wrapped around 2 fingers and rub the threads with a little. this keeps all that grime and crap from winter from getting into everything andalso makes it easy to clean up in the spring