1 (X): Roll Angle

deg

The suspension roll angle and is defined as the arctan of the difference in wheel center displacements divided by the difference in wheel center y coordinates or:

atan((rdisp-ldisp)/abs(rwcy-lwcy)

The sign is positive when the right wheel is in jounce and the left wheel is in rebound as in a left turn.

2 (Y):  Tread Width

mm

The distance between the left and right tire patch points.

3 (Z):  Tread Change

mm/m

The change in tread width due to a change in wheel displacement and is defined:

Orientation A:

(C(8,3)+C(8,9)-C(2,3)-C(2,9)+

slr*(C(10,3)+C(10,9)-C(4,3)-C(4,9)))*2000/

(C(3,3)+C(3,9)+C(9,3)+C(9,9))

Orientation B:

(-C(8,3)-C(8,9)+C(2,3)+C(2,9)+

slr*(-C(10,3)-C(10,9)+C(4,3)+C(4,9)))*2000/

(C(3,3)+C(3,9)+C(9,3)+C(9,9))

4 (RX):  Track Width

mm

The difference in wheel center y coordinates.