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 WHY IGNORING SMALL VIBRATIONS IS COSTLY That tiny vibration you feel at the steering wheel, seat, or pedals isn't normal aging it's usually the first warning sign of a problem that's Feeling Shaking or Vibration When Accelerating? Get Everything to Fix Your Car or Truck with Kits! Tire Vibration Diagnosis: Is It Safe to Keep Driving? VIBRATION ON STEERING? That shake you feel isn't just annoying it's your car telling you something isn't right. It could be your suspension, your tires, or both working against you Notice Your Car Vibrating at Higher Speeds? It Could Be More Serious Than You Think Barry's Auto Body