Tesla Motors Club

Hey guys I was wondering if you can help me. I do have an appointment with service later this week but wanted thoughts. My steering feels loose and the car does not feel planted to the ground. I just got my winter rims and tires balanced and aligned they just came in the mail. My old tires and rims also were like this. Basically it’s bard to drive the car on the highway I can’t relax because the steering feels loose. I put it in the sport setting but to me it’s like it’s less force then the sport settings months ago. What parts could be going bad or what do you suggest? I have to keep making so many micro corrections when driving on the highway. Thanks!