Why replace: Severely worn bearings can cause wheels to wobble or even detach while driving. Damaged bearings will emit a continuous humming or metallic scraping sound. A failed bearing can cause the steering wheel to vibrate or the vehicle to veer to one side.
Advantage: Made of high-purity steel, the surface is not easily worn or peeled off. The high-precision design process eliminates the annoying "humming" noise and can also slightly improve fuel economy. High-quality sealing rings can effectively prevent moisture and dirt from entering the interior.