I have the 5 stud alloys. I had the tyres rebalanced before Xmas which I thought helped, but then a 3 hour drive up to Vienna showed it up again and seems worse now.
Having read the blades link I feel that's next logical step to explore...
When you had the alloys balanced, did they fit weights just to the inside of the rims?
I suffered a bad wobble on my Roadster and tried everything. In the end the factory had the car off me for a day and ended rebalancing the wheels with weights to both sides of the rims which more or less cured the problem. The alloys aren't made to the best of tolerances which doesn't help nor does the fact the the wheel rim sits well outside the ideal line of the kingpin and so will tend to exacerbate any unbalanced wheel.
