As an initial rough guide: -
For a 6-stud wheel measure between the center of two diametrically opposite studs.
For a 5-bolt pattern multiplying the center distance between any two adjacent studs by 1.701.
The easiest way [most accurate] calculate the PCD is as follows:
1) Identify the size of rim or tyre size. (This helps to narrow down the likely PCD sizes)
2) Measure the distance 'S' between two adjacent studs from the centre of each hole.
3) Using the calculator enter the number of studs/holes and ’S’ and press 'calculate'.
3) Using the relevant diagram depending on the number of studs you have you should be able to identify the correct PCD.
Refer to these diagrams then go to this calculator url:
http://www.western-towing.co.uk/acatalo ... ation.html
- wpc1.JPG (25.7 KiB) Viewed 4896 times
Info provided by Ian Johnson @ 10/2014