WHAT IS PCD:
The PCD (pitch circle diameter) of a wheel refers to the diameter of an imaginary circle drawn through the centre of the stud holes on the mounting face of the wheel. If the wheel has an even number of bolt holes, in other words it’s a four-, sixor eight-stud, you simply measure between two opposing holes. If the wheel is a five-stud there are two ways to calculate this. Either you simply draw an imaginary circle through the centres of the five bolt-holes, and measure the diameter, or you measure the distance between two neighbouring holes and multiply by 1.701. As an example, 5x114.3 would indicate the wheel is a five-stud with a PCD of 114.3m m.