There is no need to replace the aluminum ring with a steel ring. The service life of aluminum alloy wheel hub is slightly shorter than that of steel wheel hub. In fact, aluminum alloy wheels are harder than steel wheels, so the energy absorption is not as good as steel wheels under the same strength, and it is easier to break. Steel ring, also called wheel hub, is a cylindrical metal part, the center of which is installed on the shaft and supported by the inner contour of the tire. Also called rims, rims, wheels and tire bell. There are many kinds of wheels according to their diameters, widths, molding methods and materials. Wheels can be roughly divided into paint painting and electroplating, and electroplated wheels can be divided into silver plating, water electroplating and pure electroplating.