How To Measure Wheel Bolt Patterns



BOLT CIRCLE:
Diameter of a virtual circle passing through the center of all bolt holes.


Examples:

4-LUG BOLT PATTERN


Common Sizes:
  • Light Duty American Hubs, measurement "A" = 2-13/16''
  • Heavy Duty American Hubs, measurement "A" = 4''.
  • Heavy Duty Metric Hubs, measurement "A" = 110mm or 115mm


3-LUG BOLT PATTERN (Racing)


Common Sizes:
  • American, measurement "A" = 2-1/2''
  • Metric, measurement "A" = 58mm