How can I accurately measure a vehicles wheel bolt pattern, regardless if it is a car or truck?
- Are any special tools needed?
- Is there a certain process to measuring a pattern?
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PCD or Pitch Circle Diameter is typically given as a number multiplied by another number. The first number is the number of bolts, nuts or studs and these can be simply counted. The second number is the diameter of a circle which has a central point in the centre of the hub and whose outside line goes through the centre of each bolt hole.
It is therefore possible, using a simple ruler, to calculate the PCD using little more than a ruler and the conversion tables shown at this useful link.