Wheel bearings are crucial components in vehicles that allow the wheels to rotate smoothly. They consist of small steel balls or rollers housed in a metal ring, which reduces friction between the wheel and the axle. This helps the wheels turn freely, improving the vehicle's performance and fuel efficiency. Over time, wheel bearings can wear out due to constant use and exposure to dirt and moisture. When they fail, it can lead to unusual noises, vibrations, or even wheel separation. Regular maintenance and timely replacement of wheel bearings are essential for safe driving and optimal vehicle operation.