Sorry to hear that. This whole thing is unbelievable to me. Some people saying their GX is smooth as silk, others with undriveable vibrations. Some dealers saying it's normal, others apparently not. I'm inclined to wait out a firm resolution before I get into one of these.Just got my OT+ yesterday. I am thinking I may have the same issue. Coming from a 2010 4runner with Icon stage 2 lift with BFG 285/70/17 C rated. The 4runner is obviously not as "smooth" but it doesn't shake like the GX does. Kind of feels like you are driving on a very mild washboard dirt road. Reported the issue today. Will report back.