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Wheel size is actually the diameter of the wheel, people often say 15-inch wheels, 16-inch wheels which is the size of the wheel (diameter). Generally for wheel size, the higher the tire flat ratio the better visual tension effect. And in the vehicle, the increase of handling stability comes with the increase of fuel consumption.
Size
Wheel size is actually the diameter of the wheel, people often say 15-inch wheels, 16-inch wheels which is the size of the wheel (diameter). Generally for wheel size, the higher the tire flat ratio the better visual tension effect. And in the vehicle, the increase of handling stability comes with the increase of fuel consumption.
Width
The width of the wheel is also commonly known as the J-value. The width of the wheel directly affects the choice of tires, and different J-values for the same size tires will result in different tire ratios and widths.
PCD and Hole Position
The professional name of PCD is Pitch Circle Diameter, which refers to the diameter between the fixed bolts in the center of the wheel. The holes are 5 bolts. When choosing a wheel, PCD is one of the most important parameters. For the sake of safety and stability, it is best to choose a wheel with the same PCD as the original car for upgrading.
Offset
Offset (also called offset or ET) is the distance between the mounting surface and the centerline of the wheel, and this parameter can usually be found on the back of the wheel. In layman's terms, it means whether the wheel is retracted inward or protruded outward after the modification. The ET value is positive for cars in general and negative for a few vehicles and some Jeeps.
Center Hole
The center hole is the part used to fix the connection with the vehicle, that is, the location of the wheel center and the concentric circle of the wheel. The diameter size here affects whether we can install the wheel to ensure that the geometric center of the rim can match the geometric center of the wheel (although the wheel shifter can convert the hole distance, but this modification is risky, users should be careful to try).