Tyre axis system

The forces and moments acting upon the tyre are shown in the diagram. This is based on the SAE convention; other conventions can apply i.e. ISO.
Slip angle (Alpha) is positive when the tyre is slipping to the right. The inclination angle (Gamma) is positive, this would equate to a negative camber angle for the left tyre and a positive camber angle for the right tyre, when viewed from the rear with the car turning to the left.

Tyre axis system - White-Smoke

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