Why does the steering wheel vibrate?

Most of us like to drive super speed cars but end up driving a decade old engines. Even though we know that it cannot reach the mind boggling speeds, we push the throttle hard enough, just to end up drinking more fuel and coughing  more exhaust fumes, just to accelerate the speed to a kilometer or two. Even that we don't care about. When you reach a specified speed the whole car starts to vibrate and you don't know why. But when you slow down the vibrations disappears as a magic. This you may have felt even in slow speeds at around 10-12 km/hr. You may ask a question? Why does this happen? Whats the reason behind it?

Why does the steering wheel vibrate?
Why does the steering wheel vibrate?


As the steering wheel is connected to the wheels, the problem lies in the wheels and engine only. If the wheels are not aligned properly or if your wheels have slipped belt i.e the wear and tear is only in a specific zone then your wheels tend to wobble. This in turn makes the steering wheel to vibrate.

Another reason can be resonance. Earlier car bodies and their suspensions were not adjusted to high speed limits. So when you accelerate your car to higher speeds then the whole car body and suspension starts to vibrate. This may stop when you cross the range of resonance speed at which it vibrates.

Even if the engine is weak and not powerful enough to push your car to higher speeds, your steering wheel vibrates due to the internal vibration of the engine. The reason is that the engine is not able to bear the load and is not able to pull the car to higher speed due to lack of power. This problem is dealt in modern cars by implementing heavy dampers and shock absorbers.

There are several other reasons like bent rim and sometimes the joint of the control valve is not properly connected.

So even if your car is old, don't worry. Just realign your wheels and fasten some bolts to get some relief at higher speeds.