'What the [Expletive] Is That?:' Customer Complains Car is 'Shaking Like Crazy.' Then His Mechanic Takes a Closer Look At The Tire Why is My Car Shaking? ( Experts Answer ) Simi Valley Chrysler Dodge Jeep Ram Blog Car Vibrating at High Speeds: Common Causes and How to Fix It Tire vibration while driving is a clear sign that something is wrong with your wheels or suspension system. Here are the top causes: 1. Wheel Imbalance The most common cause, especially