Why Is Your Car Shaking While Driving Common Causes & How to Fix? Notice Your Car Vibrating at Higher Speeds? It Could Be More Serious Than You Think Barry's Auto Body Tire Vibration Diagnosis: Is It Safe to Keep Driving? Can Over Inflated Tires Cause Vibration 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