PCD from a measurement
Compute bolt circle diameter from lug count and stud spacing for 5, 6, and 8 lug hubs.
Bolt pattern
Enter lug count and a measured stud spacing to find the bolt circle diameter and confirm wheel compatibility.
In short
Calculates bolt circle diameter from lug count and a measured stud chord using PCD equals chord over sine of 180 over n.
What it does
Compute bolt circle diameter from lug count and stud spacing for 5, 6, and 8 lug hubs.
Matches the measured value to a known pattern within tolerance and names it.
Bolt pattern, hub bore, and stud thread by generation, plus interchangeable Toyota and Lexus wheels.