I have been the king of vibration on this forum. Could be the balance, tire defect ( tread goes side to side as it spins or out of round), or driveline issue. I had my driveshaft replaced, wheels replaced, and tires replaced. For me I had two defective rear tires that created the vibration. I went with Michelins and its much much better but there is still a hair of vibration. I have had three dealership, Shop foreman, and a Lexus engineer fly out from LA to check the car only to find that it was the tires.
Like they say in medical school " when you hear hoof steps think horses not zebras" . start with the obvious then dive into the rare stuff.
Could also be the upper control arm bushings. There was a TSB on them too.