**3.5 Wheel bearings**

The wheel bearings enable low-resistance rotations of the wheels by transferring axial and radial forces and support for wheel hub, wheel, and brake disc or brake drum. In modern automobiles, the wheel bearings are equipped with sensors that

send rotational speed signals to driver assistance systems like ABS, ESP, etc. [9]. The wheel bearings perform multiple functions, some of them are listed below.
