What could be wrong if my car gallops too much on a rough road? on 2002 Mercedes-Benz ML320

Since I changed the Hub of my car front wheel, the car has not been balanced. It rocks when driving on a rough road and gives unpleasant noise at every bump or gallop.What could be wrong?

by in Keller, VA on December 03, 2009
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1 answer
ANSWER by , December 08, 2009
wheel could be loose or shock could be worn out, have a shop check this right away