Why does the steering wheel shake at high speed in a small car?

[AdrianaFitz]

When the steering wheel shakes at high speed in a small car, it is mostly due to issues with the car tires. This happens because uneven mass distribution across different parts of the tire causes dynamic imbalance when the wheels rotate at high speeds, leading to severe steering wheel vibration while driving. In such cases, a four-wheel alignment and dynamic balancing of the tires are necessary, and in severe cases, the tires may need to be replaced. Below are the functions of car tires: 1. Supporting the entire weight of the vehicle: Car tires support the full weight of the vehicle, bear the load of the car, and transmit forces and moments in other directions. 2. Enhancing vehicle performance: Car tires transmit traction and braking torque to ensure good adhesion between the wheels and the road, improving the car's power, braking, and off-road capability. They also work with the car's suspension to cushion impacts during driving and dampen resulting vibrations. 3. Preventing early damage to car components: Car tires protect vehicle components from severe vibrations and early damage, adapt to the vehicle's high-speed performance, reduce driving noise, and ensure driving safety, handling stability, comfort, and fuel economy.