2015 Dodge Journey Problem, anybody know?

I have a 2015 Dodge Journey Crossroads, it's the fancy one with the expensive 19" tires. Four cylinder, front wheel drive. When I drive the steering wheel shakes, or wiggles back and forth. usually starts around 50mph. Gets waaaay worse around 60-68, makes the whole car vibrate. I've put on new tires multiple times and had it aligned multiple times. I trust the new tires and the people who balanced them, and having had it balanced multiple times that doesn't seem to be the issue. Does anybody know what's up?