This may have been answered before, but this is my first BMW. When I am driving at a speed between 40 and 50 mph the front end shimmies. I saw one company that had an anti-shimmy kit listed for $20. Is this kit worth the money or would I be better off spending the money on some other part to correct the problem? I like the car, it's just this one thing that drives me crazy. I understand that this is a common occurrence on these cars, but I haven't been able to find out exactly what causes it. Thanks for any help. Larry