Hello dear community! I don’t know about the technical finesse and therefore I depend on your experience. I hope you can help me. It’s about the following: My Nissan Micra was reared last week new tires (ATU). Yesterday I had to drive by car on the highway. I noticed that starting from 100 kmh the steering wheel starts to shake. In addition, the car now has such a spongy driving feeling as if you are swimming on the bicycle. Do you know what this might be all about? I didn’t have it with my winter tires or the old summer tires.A couple of details about the car: Micra 1.3 BJ 2000 tires Kumho 14inch I’m very grateful for any help. MfG Alex