Experience shows that stability, which is one of the more important properties of single-track vehicles, defined as its resistance to interference or disturbance and returning the motorbike to ride straight ahead after riding in a turn depends on many factors. Implementation of road tests motorcycle carries a great risks to the rider and used sensors and archive equipment. The existing simple mathematical models do not allow a proper simulation of these forms of movement. An attempt to carry out tests on the bench stand was taken The influence of kinematic parameters of the front unit of the motorcycle on its stability was analyzed on a specially designed drum bench stand. The study included wobble vibrations for different speeds and different angles of the front fork of the motorcycle. The paper contains a description of the issues of vibration occurring in single-track vehicles, description of the bench test and compilation of the results and obtained stability characteristics.