2012 focus vibration at 55 to 70 mph
Well it could be few things, first I would check tires and balance them. Also A good idea do tire rotation Discount tire does it for free
I had the same problem on my 2003 Ford Focus (130,000 miles). Took it to a shop, they said there was a broken strut, and suggested changing the struts in pairs. Did as they said, took care of the problem.
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