Ok guys than how do you explain what I went through over the weekend? We put on the normal tyres and I did not have any vibration at all. However I decided to stick with the run flats as the vinration is very very slight, not something you will feel right away unless your a car nut like myself. I also did have a seat in my friends 07 730Li which also uses run flats and he had the same issue and at the same speed like mine.
2012 BMW 640i (AC Schnitzer Package)
2011 Mercedes E250
2007 Ford Mondeo
"Age is but a statistic that has no relevance to enjoyment of horsepower"