Final answer:
A car or truck will pull or lead to the side with the maximum amount of positive caster, which impacts the vehicle's stability and handling.
Step-by-step explanation:
The amount of positive caster in a vehicle's wheel alignment affects the stability and handling of the car. Castor angle is the angle created by the steering's pivot point from the front to back of the vehicle. A car or truck will pull or lead to the side with the maximum amount of positive caster. This is because positive caster tends to increase straight-line stability; it can cause the vehicle to pull towards the side with more caster. However, the dynamics of vehicle steering are affected by various factors, so the caster setting alone does not inevitably determine the pull direction without considering other alignment variables.