Rims are as important as legs to human beings for automobiles. As rims shoulder the supporting role and are closely connected with the road, more and more modification enthusiasts are ready to move. People rely on clothes and horses rely on saddles. Cars have long become a brand new business card for social interaction in contemporary society, while rims, like details in the daily dress, play a high role in car life and modification culture.

Why are rims modified?

Most people will consider rims as a modification to improve the "visual effect". Indeed, rims of different styles can easily change the overall temperament of a car. However, as a core component closely related to driving safety, it not only has the effect of improving temperament but also is closely related to vehicle dynamic performance and driving safety.

Compared with the appearance modifications such as enclosure and fixed wing, the modification of the rim is relatively simple and convenient, and the effect is obvious. However, the rim is the support connecting the tire, suspension, front/rear drive shaft, and steering system. Compared with the style, the appropriate size and value are the most important considerations.

What does rim modification include?

There are four very important values for automobile rims, namely rim size, thread pitch, rim offset, and center hole.

Rim size, that is, the diameter of the rim. The simplest identification method is to identify the tire parameters. For example, 225/40 R18 tires are suitable for mounting on 18-inch rims. Similarly, 18-inch tires also have deviations in tire width, which involves another rim size parameter: The j value. The J value represents the width of the rim, and the proper rim width can effectively play the role of the tire. For example, 7.5J rims are best matched with 215 to 235 tires, while 8 J rims are suitable for 235 to 255 tires.

Screw pitch, namely PCD value, refers to the distance between the center of the rim and the center of the nut. Different automobile manufacturers often use their unique standards. It should be noted that the PCD values of models of the same manufacturer in different years, or even models of different brands in the same group, maybe the same, which has nothing to do with the vehicle level and configuration.

Therefore, the rim modification has given birth to a cross-brand mix and match style, which is most sought after by the German Volkswagen Group. It is generally used for low-grade vehicles to use the rims of high-grade vehicles. The visual effect of this kind of matching is more delicate, but due to the channel problem, there is less regular product supply, and the cost is still high.

The center hole may be strange to friends who are not familiar with the modification, but the enthusiasts who pursue extreme effects and performance are often trapped in the problem of the center hole when choosing. The center hole refers to the diameter of the middle mounting surface of the rim, which determines whether the rim can fully "fit" and become the "shoe" of your car. If the center hole is larger than the original rim, the "new shoes are too big" will affect the stability and safety of driving; If it is smaller than the original rim, then "the shoes don't follow", even if the style is attractive, it will not be enjoyable.

To solve this problem, the center hole sleeve is damaged in the automobile rear market and installed behind the wheel hub to meet the original factory setting of the vehicle. However, it is not recommended to try it in the Chinese market at present, because the product reliability and technician technology are difficult to ensure the ease of future use.

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