I also have a vibration issue. It didn't happen right away. I have had my car 1 yr and it's at 25k miles. This is the 2nd time it's in for vibration. The Shop Mfg felt it, kind of a shaking. Anyway, he called and said it definitely is a tire issue. This would also cover the issue I have with jerking to the left. The catch is, tires are not warrantied by Dealer!!!! He recommended I call Customer Service and file a complaint. After a few minutes, he said he would call and see what he can do. I said with what I am paying there shouldn't be a question, just get me new tires and a different brand. I have Dunlop but am requesting Michelin. Anyway, let's see where this goes.
On a different note, above the glove box there was alot of shaking (squeaky noise). I thought it was the passenger air bag. Apparently, under the dash, there are many plastic pins keeping the windshield in. One of those pins (pegs) is loose. I hope I was of some help!