For automobile manufacturers, the cost can be saved if it can be saved. Unfortunately, the wheel has become the object of cost saving of the original factory. As long as the size is appropriate and the rigidity is sufficient, the original wheel will choose the mold with simple structure and moderate shape for mass production. Although there is no problem with quality, it will not take care of the personalized needs of consumers. Some low-end vehicle wheels are even ugly.
Therefore, replacing the wheel wheel has become another good way for car owners to show their personality after the body sticker. However, there are many parameters involved in changing the wheel wheel. The car owners with this intention should do their homework first to avoid potential safety hazards.
- Center hole diameter (CB)
Refers to the size of wheel center hole. Although wheels with different factory values can be installed through the positioner, we do not recommend this for safety reasons.
- Pitch diameter (PCD)
For example, a wheel with a pitch diameter of 5x120mm represents that it has five positioning bolts, and the circular diameter they form is 120mm. This value should also comply with the original factory.
Also known as ET value, this value is positive, indicating that the wheel fixed surface is outside the center plane, otherwise it is within the center plane. The offset value of the car is generally positive, and this value has a great impact on the stability of the car driving and the tracking of the car turning, which is determined by the original factory, and cannot be changed without special needs.
- Diameter and width
The diameter determines the size of the rim. Because the speedometer reading of the car is measured according to the wheel speed, the excessive wheel diameter will cause the speedometer reading to be too small, and you will overspeed unwittingly. Excessive wheel diameter will also rub and hang on the wheel arch and fender. Therefore, it is better to upgrade the wheel wheel to be 1 inch larger than the original factory, not more than 2 inches at most, and to match with a thin tire to ensure that the size of the entire wheel is the same as before the upgrade.
The width affects the type of tyre to be used after upgrading. Too wide tyres will reduce the starting speed and consume more fuel. The common values are: 185mm wide tyres correspond to 5-inch wide rims; 195mm corresponds to 6 inches; 205mm corresponds to 6.5 inches; 215 corresponds to 7 inches.