JJRC C8813 RC car servo torque size what effect does it have?

The torque of the servo determines its ability to drive the load.
A servo with high torque can drive the wheels, swing arms and other parts more powerfully when controlling the steering of the vehicle, especially for larger and heavier RC vehicles or when the steering force needs to be larger in complex road conditions, a high torque servo can ensure the accuracy and stability of the control.