There are many parameters involved in replacing the wheels. It is best for interested owners to do their homework first so as not to cause hidden dangers to safety.
1. Center Bore (CB)
Refers to the size of the center hole of the hub.Although wheels with different values from the original factory can be installed through positioners, this is not recommended for safety reasons.
2. Section circle diameter (PCD)
For example, a hub with a diameter of 5x120mm means that it has 5 positioning bolts, and the diameter of the circle they form is 120mm.This value should also comply with the original factory.
3. Offset
Also known as the ET value, this value is positive, indicating that the fixed surface of the hub is outside the center surface, and vice versa, it is within the center surface.The deviation value of a car is generally positive, and this value has a great impact on the stability of the car and the traceability of 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 rim.Since the speedometer reading of the car is measured based on the speed of the wheel, the wheel diameter is too large to cause the speedometer reading to be too small. Unknowingly, you are speeding.Excessive wheel diameters will also rub against the wheel arches and fenders.Therefore, it is better to upgrade the wheels to be 1 inch larger than the original factory, no more than 2 inches at most, and to match thin tires to ensure that the size of the entire wheel is the same as before the upgrade.
The width affects which tires are selected after the upgrade. Tires that are too wide will reduce the starting speed and consume more fuel.The correspondence of common values is: 185mm wide tires correspond to 5-inch wide rims; 195mm corresponds to 6 inches; 205mm corresponds to 6.5 inches; 215 corresponds to 7 inches.
