[s-cars] intermittent shudder

[Elijahallen92 at aol.com]

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Hi, I noticed today that around 80mph the car will start to shake like
something is in the wheel. I slow down and speed up again and its gone. WTF!
It does it on and off and there is no sign until about 80mph where sometimes
it shakes violently in the steering wheel and the whole car. What could cause
this to only happen about 50% of the time? Thanks for any help,

Elijah