WARNING: The condition of the steering significantly affects not only the driving comfort, but also the driving safety.
The cause of knocks and vibrations on the steering wheel may be the faulty condition of the ball joints of the steering rods and steering gear, as well as the wheels of the car. Check up a steering according to a technique stated in subsection «Inspection and testing of the steering on the car».
USEFUL ADVICE: A possible cause of vibration and impact on the steering wheel when driving at speeds above 70-80 km/h may be an imbalance of the front wheels. Contact a car service or tire shop to check the balance of the front wheels.
If shock and vibration on the steering wheel appear at the moment you press the brake pedal, you need to replace the brake pads, repair or replace the front brake discs (see «Front wheel brakes»).