I have owned my 2015 Subaru Crosstrek Hybrid for just a little over a year now; I have approximately 95K miles on the car and for about 3 months now I've had issues that started while driving at high speeds (over 60mph). It started off feeling like I was driving over a "rumble strip" and it would occassionally happen and only at high speeds. It's now progressed to where it's more like the entire car is shaking and occurs even with low speeds although not bad, you can hear the "rumble" at low speeds but the shaking is definitely at higher speeds. I've had several people check it and got different answers as to what was wrong (bad ball joints, wheel bearing MAYBE going bad, tires out of balance, etc). I have had to put a lot of work into this car since purchasing and hoping to not have to put a lot more into it right away but wanted to see if anyone can tell me if they have had this problem and if so what was the culprit that was causing the issues? Thank you so much for your insight.