I have a GX470 with about 13,000 miles. When i first purchased it I noticed the vibration. The dealer said it was because it was on a 4Runner frame. It seems to be getting worse. I called Lexus yesterday. They said they werepleased I reported it but it didn't seem to be a maajor problem yet....This was my 3rd Lexus...probably my last. I left the dealership because of their obvious lack of consumer concern. Will try another...then will dump it of nothing changes...too bad...it is a nice vehicle....

 

The vibration issue has been discussed many times. Please use the search function it will limit the need to continually combine threads with the same topic(s).