Slip Calculation
The slips are calculated in the ISO coordinate system as represented below:
Figure 1.
Figure 1.
Longitudinal Slip
The ratio between the contact patch longitudinal velocity and the wheel center longitudinal velocity.
Where 
is the longitudinal slip velocity of the contact point and 
is the longitudinal velocity of the wheel along 
.
Lateral Slip
The angle between the lateral slip velocity of the contact patch and the longitudinal velocity vector of the rim.
Where 
is the lateral slip velocity of the contact point in the ISO
coordinate system.