How to choose the wheel

1.Wheel size: In fact, it is the diameter of the wheel hub. We often hear people say 15-inch wheels and 16-inch wheels. The 15-inch and 16-inch wheels refer to the size (diameter) of the wheel.

Generally, on a car, a large wheel hub and a high tire flatness ratio can have a good visual tension effect, and the stability of vehicle handling will also increase, but the fuel consumption will increase with it. Such additional problems.

2. Hub width: The width of the hub is also commonly known as the J value. The width of the hub directly affects the choice of tires. For tires of the same size, with different J values, the aspect ratio and width of the selected tires are also different.

3.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 hub. Generally, the large hole position of the hub is 5 bolts and 4 bolts, but the distance between the bolts is also different. Therefore, we can often hear the names 4X103, 5X114.3, and 5X112. Taking 5X114.3 as an example, it means that the PCD of this wheel hub is 114.3mm and the holes are 5 bolts.

When choosing a wheel hub, PCD is one of the most important parameters. For safety and stability considerations, it is best to choose a wheel hub with the same PCD as the original car for upgrading.

4.Hub offset: English is Offset, commonly known as ET value, the distance between the hub bolt fixing surface and the geometric center line (the center line of the cross section of the hub). To put it simply, it is the difference between the screw fixing seat in the middle of the hub and the center point of the entire rim Value, in layman's terms, is whether the wheel is retracted inward or bulged outward after modification.

For ordinary cars, the ET value is positive, for a few vehicles and some jeeps, it is negative. For example, if the offset value of a car is 40, if it is replaced with an ET45 wheel, it will visually be more retracted into the wheel arch than the original wheel.

The ET value not only affects the visual changes, it is also related to the steering characteristics of the vehicle and the wheel positioning angle. A too large offset value may cause abnormal wear of the tires, easy wear of the bearings, or even failure to install properly. .

In most cases, wheels of the same style of the same brand will provide different ET values to choose from. Comprehensive factors must be considered before modification. The safest case is to maintain the ET value of the modified wheel without modifying the brake system. The original ET value is the same.

5.Hub center hole: The center hole is the part used for the fixed connection with the vehicle, that is, the position of the hub center and the concentric circle of the hub. The diameter size here affects whether we can install the hub to ensure that the geometric center of the rim can be consistent with the geometric center of the hub. Although the hub shifter can change the hole pitch, this modification is risky, so try it carefully.