What parameters should be paid attention to when replacing the wheel hub?

1. Center hole diameter (CB)

Refers to the size of the center hole of the wheel hub. Although wheels with different values from the original factory can be installed through a positioner, we do not recommend this for safety reasons.

2. Pitch circle diameter (PCD)

For example, a wheel with a pitch circle diameter of 5x120mm means that it has 5 positioning bolts, and the circular diameter they form is 120mm. This value should also comply with the original factory.

3. Offset

Also called ET value, this value is positive, indicating that the wheel hub fixing surface is outside the center plane, and vice versa, it is inside the center plane. The offset value of a car is generally positive, and this value has a great impact on the driving stability and tracking performance of the car when cornering. It is determined by the original factory and cannot be changed without special needs.

4. Diameter and width

The diameter determines the size of the wheel rim. Since the speedometer reading of the car is measured based on the wheel speed, a wheel diameter that is too large will cause the speedometer reading to be too small, and you will exceed the speed limit without knowing it. A wheel diameter that is too large will also rub against the wheel arch and fender. Therefore, it is better to upgrade the wheel hub to 1 inch larger than the original one, and no more than 2 inches at most, and it should be matched with thin tires to ensure that the size of the entire wheel is similar to that before the upgrade.

The width affects which tire to choose after the upgrade. Too wide tires will reduce the starting speed and consume more fuel. Common values correspond to: 185mm wide tires correspond to 5-inch wide wheels; 195mm corresponds to 6 inches; 205mm corresponds to 6.5 inches; 215 corresponds to 7 inches.