2022 Model Y. I'm also experiencing a high frequency vibration occurs mostly upwards of 75 mph and can be felt in the floor, and to a lesser degree, in the steering wheel. Not so noticeable around town, but it is extremely fatiguing on long road trips. In fact, my wife puts a small pillow on the floor to dampen the vibrations. On a super smooth road at lower speeds, there is a roughness - it almost feels like I'm driving on compacted pea gravel.
I've made 3 visits to 2 different service centers, with a 4th scheduled next week. Each time, the SC returns the car to me with the same problem, dismissively telling me it's normal.
Discount tire has also road force balanced the tires and told me they are spot on. In addition, they suggested contacting Continental. Continental offered me a new set of tires at half off, which I accepted.
After all this, the problem persists and I'm at my wits end. I would've accepted lots of other defects, but this one really takes away from my enjoyment. My mother in laws 2002 Civic is smoother than this thing.
It's obviously not the tires. I've considered purchasing the Vibrate NVH app to diagnose the issue, but then what? I would have to convince the SC to follow the recommendation of the app.
I would love to hear from anybody that has gotten this issue fixed.