I drive a 2005 Mustang and it shakes usually between the speeds of 60-70 mph. However, I have had my tires rotated and replaced like 4 or 5 months ago. What could be the problem?
check if you have.. a watermelon or something of the sort in your trunk. Often, things neglected over time in the trunk are the source of rattling, or in my case, booming noise while driving.