I have an awful vibration and noise whenever I drive at 60 mph or above in my Ford Explorer 2007. I've changed practically all the front suspension, all the transmission has been replaced, my tires have been changed, aligned and rotated, but nothing seems to solve the problem. The steering wheel doesn't shake, it's the whole car that does. I've tried putting it in neutral, the gearbox, when I'm driving past 60 mph but the problem is still there. Has anyone any idea how can I solve my problem?