1 (X): Left Spindle Length

mm

The true left spindle length or the distance between the left wheel center and the point on the spindle which is closest to the kingpin axis.

2 (Y): Right Spindle Length

mm

The true right spindle length or the distance between the right wheel center and the point on the spindle which is closest to the kingpin axis.

3 (Z):  Average Spindle Length

mm

The mean of components 1 and 2.

4 (RX): Left Spindle Offset

mm

The true left spindle offset or the minimum distance between the left spindle axis and the left kingpin axis.

5 (RY): Right Spindle Offset

mm

The true right spindle offset or the minimum distance between the right spindle axis and the right kingpin axis.

6 (RZ):  Average Spindle Offset

mm

The mean of components 4 and 5.