What does pcd mean for car wheels or tyres

Date: 2018-04-19 / views / From: Aully.com

What does PCD mean?


PCD stands for pitch circle diameter and is the diameter of a circle drawn through the centre of your wheel's bolt holes. which passes through the centre of all the studs, wheel bolts or wheel rim holes.

P.C.D. is measured in millimeters and also indicate the number of studs or bolts the wheel will have. 

The easiest way calculate the PCD is as follows:

1) Measure the distance ‘S’ between two adjacent studs from the centre of each hole.

2) Calculate from the formula below

PCD Calculation Formula

4 Stud PCD = S / 0.7071

5 Stud PCD = S / 0.5278

6 Stud PCD = S / 0.5

Volkswagen Alloy Wheels are usually either 4x100: i.e. 4 bolt holes drilled through the centre of an imaginary 100mm circle, or 5x100: for VR6s, GTis and MK4s 

**Note: on 4 lug fitments you can measure from the center of one stud to the center of the stud directly opposite.

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