The running gear is responsible for dynamic characteristics and comfort in the car at the movement. Its main objective — observance and preservation of the set trajectory of the movement, only in this case the car is reliable in management. This task is not so simple as wheels at the movement not only rotate, but also move under the influence of a roadbed up and down.

During the braking, acceleration and in turns there are also additional forces with which the running gear has to cope. It is possible only in that case when all its components have optimum mutual control. Springs and shock-absorbers, a suspension bracket of forward and back bridges, steering, and also wheels and tires belong to a running gear. The brake system which in general is also relating to a running gear is presented in the separate section.