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

Bolt to Bolt Measurements for 3-Lug Bolt Patterns



A= Bolt to Bolt (center to center)
B = Bolt Circle

Bolt to Bolt (A)Bolt Circle (B)Common Uses
2.16'' (55mm)2.50'' (64mm)American Racing Rims & Wheel Hubs
1.97'' (50mm)2.28'' (58mm)Shifter (Metric) Racing Rims & Wheel Hubs
2.28'' (58mm)2.64'' (67mm)Shifter (Metric) Racing Rims & Wheel Hubs
3.03'' (77mm)3.50''(89mm)3-Bolt Hole Chinese ATV Wheels