What is a Hub Bearing?

The hub bearing is a crucial part of the wheel, made up of bearings, seals and sensors. It comes as a pre-assembled unit, which is then fitted when the wheel is removed. The function of the hub bearing is to provide a safe, smooth driving experience – if it’s loose, old or worn, you might notice things like bumpiness, an unusual noise, or your vehicle may be less fuel efficient.

Hub bearings should always be checked at a service. If you think something is wrong, you can check them yourself. Access can be difficult and you will probably need to use specialist equipment such as a skinny socket wrench to reach them. As the hub bearing is one complete unit, if there are issues with the integral bearings that form part of it, you might prefer to get it checked over by a mechanic. They will know what to look out for and can replace parts more easily.