Wheel bearings and wheel hubs are two key components in a vehicle's suspension system, with different functions but working in coordination. The primary function of wheel bearings is to reduce friction during wheel rotation and ensure smooth wheel movement. Composed of balls or rollers, they are installed inside the wheel hub and bear both the vehicle's weight and dynamic loads during operation. The wheel hub is a metal component that connects the wheels to the suspension system, securing the tyres and transmitting driving and braking forces. In models such as the BYD F3, the wheel hub uses a 15-inch specification, while the bearing requires regular lubrication checks. Any abnormal noise or looseness should prompt immediate replacement to prevent safety risks. Maintenance for both components must adhere to the manufacturer's torque specifications-for instance, chassis bolts should be tightened to 45-55 N·m. After replacement, a road test and wheel alignment are recommended to ensure handling stability.
