What is the meaning of wheel hub before and after matching?

Wheel hub before and after matching what is the meaning:

Width of front and rear wheel hubs. In front of the general narrow, control performance is a little better, the rear wheel a little wider on the stable run a little better, brake a little better.

The hub, also known as the wheel ring, wheel, tire bell, is a barrel shaped, central mounted on the shaft of the tire's inner profile supporting the tire. Hub according to the diameter, width, molding method, different kinds of materials.

According to the characteristics and requirements of different models, the wheel hub surface treatment process will take different ways, can be roughly divided into baking paint and electroplating two. General models of the wheel hub in the appearance of less consideration, good heat dissipation is a basic requirement, the process is basically using baking paint treatment, namely first spraying and then electric baking, the cost is more economical and beautiful color, keep for a long time, even if the vehicle scrapped, the color of the wheel hub is still unchanged. The wheel hub surface treatment process of many Volkswagen models is baking paint, such as Santana 2000, Xia Li Junya, Times, Southeast Rishi or Honda Odyssey. A few fashionable avant-garde, dynamic color wheel hub is used also is baking paint technology. This kind of wheel hub price moderate, complete specifications.

Electroplating wheel hub and silver electroplating, water electroplating and pure electroplating and other types. Electroplating silver and water electroplating wheel hub although bright and vivid color, but keep for a short time, so the price is relatively cheap, for a lot of young people who pursue freshness.