CVO 6/22/2013Unbalanced tires will likely the cause of this problem. Rotate the tires and see if that will solve the issue.
John's Auto Repair 6/22/2013YOU MAY HAVE A SHIFTED BELT IN ONE OF THE FRONT TIRES. EXAMINE TIRES AND LOOK FOR ANY SHIFT IN THE TREAD PATTERN. JACK-UP CAR SPIN TIRES TO INSPECT