I recently put continental extreme contact d/w's on. They have great traction in the rain and good straight line traction but at highway speeds (60 and above) they feel very unstable. It feels like the rear end is swaying when I move steering wheel from right to left slightly. Checked over car on a lift. Suspension and all looks very good. Tried a bunch of different tire pressures it feels best at 40lbs. Any less and the sway is noticeable at even lower speeds. So has anyone else used the d/w's? Had any issues like I'm describing? Tire rack says they do have a softer sidewall then other tires and maybe they just don't work that great with my suspension and car? Seems like bmw guys love these tires. And what other tires are you guys running? Seems like all I can find are the dw's, Michelin which are on back order, bridgestones by guy at tire rack said they use slightly cheaper material then the dw's, and nitto which I hear run smaller then other brands? But just looking for advice as I have limited time to send these back and pick something else. Thanks for any input guys.