Included angle is _______.

The included angle is defined as the sum of camber and the steering axis inclination (SAI). Camber refers to the angle of the vehicle's wheels in relation to the vertical axis of the vehicle when viewed from the front, while SAI represents the angle formed by the steering axis, which is crucial for the vehicle's stability and handling characteristics.

When determining the included angle, it is important to understand that it combines these two critical measurements in suspension geometry. Camber helps in understanding how the tire contacts the road, while SAI helps in defining how that contact point moves during steering. By adding camber and SAI together, one can gauge the overall alignment and angular disposition of the suspension system, which can significantly affect vehicle handling, steering response, and tire wear.

This understanding of the included angle is crucial for technicians working to properly align vehicles and ensure optimal handling performance.