What is wheel pcd?

Wheel PCD stands for "Pitch Circle Diameter" and refers to the diameter of an imaginary circle drawn through the center of the wheel's bolt holes or studs. This measurement is essential for ensuring proper fitment when selecting wheels for a vehicle.

PCD is typically expressed in millimeters (mm) and represented as a two or three-digit number. For example, a wheel with a PCD of 5x112 means it has five bolt holes or studs spaced evenly around a circle with a diameter of 112mm.

Knowing the correct PCD is crucial because it determines whether the wheel will properly fit the vehicle's hub. If the PCD does not match, the wheel will not bolt on correctly.

Different vehicles have varying PCD values due to differences in their hub designs. Therefore, it is essential to choose wheels with the correct PCD for your specific vehicle to ensure proper alignment, load-bearing capacity, and overall safety.

It is worth noting that some vehicles might have multiple PCD options available, allowing for different wheel fitments. In such cases, it is crucial to choose the correct PCD option according to the vehicle's specifications and manufacturer recommendations.

To measure the PCD of an existing wheel accurately, you can measure the distance between two opposite bolt holes' center points and multiply it by the constant value 1.414. Alternatively, you can find the PCD in the vehicle's owner's manual or consult a trusted mechanic or wheel specialist for assistance.

In summary, Wheel PCD is an important measurement that determines whether a wheel can be properly fitted onto a vehicle's hub. It is crucial to choose wheels with the correct PCD value to ensure proper fitment, alignment, and overall safety.