After refuelling my 2012 Passat a couple of weeks ago and on pulling back onto the highway, I noticed the steering wheel had a wobble/vibration feeling at about 40kms per hour. It seems similar to that of a tire balancing issue. On accelerating, the problem seemed to go away. This problem consistently repeats itself with the problem now being evident between 40 and 50kms per hour. I had the dealer check the car and was told that they could find nothing wrong. I figured that if it wasn't the car it must be the tires and, because I'm no fan at all of the stock 17" Hankooks, I replaced the tires with Michelin Primacy's. Needless to say, new tires - same problem. Any ideas?