I had a nasty shimmy... if we can call it that... starting from 120 KPH and up. It was definitely felt through the steering wheel. After topping off the power steering fluid, the shakes were gone. Of course, I could still detect a slight shake which I suspect will be cured with an alignment (due!). Just thought I'd throw it out there. Low PS fluid definitely amplified the problem as there probably wasn't enough pressure to hold it.