The wheel hub bearing is an important element of the vehicle's running gear. It ensures smooth wheel rotation, reduces friction, and stabilizes movement. If the hub is humming, it may indicate a serious malfunction, ignoring which leads to more expensive repairs. Let's figure out how to understand which hub is humming and how long you can drive without risking safety.
How to understand that it is the hub that is humming
The main sign is a characteristic hum, especially during acceleration or at high speeds. It may resemble a rumble, intensify in turns, under load, or when changing direction of movement. The sound may be constant or appear at a certain speed. Signs that the hub is humming:
- Increasing noise during acceleration;
- Vibrations in the steering wheel;
- Periodic beating while driving;
- Intensification of the hum during turns (when turning right, the left hub may hum and vice versa).
How to determine which hub is humming
There are several ways to determine which hub is humming:
1. Listening check
While driving, open the window and listen - from which side the hum is heard. This will help roughly identify the source of the noise.
2. Check on a lift
Raise the car and manually rotate each wheel. A humming hub makes a specific noise and may have play.
3. Play check
Hold the wheel with both hands (at the 12 and 6 o'clock positions) and shake it. Play in the vertical plane may indicate a worn wheel hub bearing.
4. Using a stethoscope
Mechanics use a special tool - an automotive stethoscope - to listen for noise while the hub rotates on a stand.
How to find out which hub is humming while driving
Sometimes it is easiest to determine which hub is humming while driving:
- If the noise intensifies when turning right - the problem is likely in the left hub;
- If it hums more strongly when turning left - a malfunction of the right hub is likely.
It is also important to consider that the sound may reflect off the body and be misleading - it is not always easy to immediately understand which hub is humming.
The hub is humming: how long can you drive
If the hub is humming, repair cannot be postponed. Prolonged driving with a worn bearing can lead to:
- Destruction of the hub;
- Loss of the wheel;
- Damage to the brake system;
- Deformation of other suspension elements.
How long can you drive with such a problem? There is no exact answer: sometimes it lasts for hundreds of kilometers, and sometimes for a couple of dozen. But the longer you postpone repair, the higher the risk of an accident and serious costs.If you notice that the hub is humming, it is important to understand in time which hub is humming and eliminate the malfunction. Ignoring the signs will lead to dangerous consequences and expensive repairs. At the first suspicion, carry out diagnostics or contact a specialist. Safety is above all.
