Car Shakes at Highway Speed
A shake that starts at highway speed and gets worse as you speed up almost always points at the wheels, tires, or suspension.
Should you keep driving?
Some causes (a separating tire, worn ball joint) are a safety risk at speed. Get it inspected soon.
Common causes
Tires out of balanceThe most common cause — a lost wheel weight shows up as a steady speed-related shake.
Bent wheel or damaged tirePothole damage or a separating belt inside the tire causes vibration.
Alignment or worn suspensionWorn tie rods, ball joints, or bushings let the wheel wander and shake.
Worn CV or driveshaftOn some vehicles a failing axle or driveshaft shows up at speed.
Rather have a pro handle it? Find a vetted local mechanic.