why does my car shake/vibrate between 100 - 120 km/h?

What is your question?

my car has a small shake between 100km/h and 120km/h i had a flat tire due to a seperated tire and i recently changed said tire and the shake has gone down quite a bit but its still there . any ideas ? I also hit the ditch very slowly but had to get a buddy to pull me out . I noticed the shake almost 48 hours later . hope this makes sense . ps. 4x4 required maintenance light came on .

What makes this problem better or worse?

stops when exceeding 130 km/h and higher. or when driving 80 km/h amd below

How long has your 2015 Mitsubishi Lancer had this problem?

1 week