A hub assembly is a crucial component in a vehicle's wheel system. It typically includes the wheel hub, bearings, and sometimes the brake rotor. The hub assembly allows the wheel to rotate smoothly while supporting the weight of the vehicle. It connects the wheel to the axle and ensures proper alignment and stability during driving. When a hub assembly fails, it can lead to issues like uneven tire wear or noise while driving. Regular maintenance and inspection of the hub assembly can help prevent these problems. Replacing a worn or damaged hub assembly is essential for maintaining vehicle safety and performance.