How to distinguish automobile rims from aluminum rims in appearance?

The high density of steel ring leads to heavy weight, which leads to the tire dynamic balance jitter amplification and heavy weight at high speed, which leads to large driving resistance and increased fuel consumption at start-up of cold car; Compared with steel ring, aluminum alloy has higher hardness and lighter weight. When the car is driving at high speed, the tire dynamic balance jitter is less than that of the steel ring, and the fuel consumption at the start is also less than that of the steel ring.

2, the price is different

The manufacturing cost of automobile rim is low, the process is relatively simple, and it is difficult to repair after deformation. Automobile aluminum ring is slightly lighter because of its high machining accuracy. The processing technology is complex and the manufacturing cost is relatively high.

3, the weight is different

Aluminum ring has good rigidity and light weight. Compared with aluminum rings, steel rings are much heavier.

Extended data

Generally, the dimensions of the hub are expressed as follows: 18x8.5, 5x 1 14.3, +42 18 (diameter 18 inch) x8.5 (width 8.5 inch) x 65433.

Tire label: 245/40- 18. 245 is the width, 40 can be understood as the thickness, and 18 means to match 18 inch hub. "The matching of wheels and tires is determined by the car. For example, if the original factory matches 16x7 wheel hub with 225/55- 16 tires, then the scientific choice when upgrading is 18x8.5 with 245/40- 18.