Roll, Tread Width, Tread Change, and Track Width

Branch ID: 40 Request Number: 50000040

Table 1.
Component	Unit	Comment
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.