Car Vibrates When Idle: Major Causes and More dubizzle If your car shakes at high speed the cause is often mechanical imbalance. Small issues become more noticeable as speed increases. Unbalanced tires are a common reason, creating vibration that grows That slight vibration on the highway? Most people ignore it., But unbalanced tires dont just make the ride uncomfortable. They wear your tires unevenly, put extra stress on suspension components, and Hi all , , I have a quite strange issue , car is 2020 xtl 83000 miles. , Sometimes if when car is put on reverse or drive it engine starts having small vibration and if it put in drive it would have Tire Vibration Diagnosis: Is It Safe to Keep Driving? The 4 Main Causes of Steering Wheel Vibration