Said steering ratio is the ratio between an angle a of the control member and a steering angle θ of the steerable wheel.

The invention relates a method of determining a steering ratio in a steer-by-wire system for a vehicle comprising a control member (2) for controlling at least one steerable vehicle wheel (7).

In the method, a steering ratio occurs as a function of the driving speed, wherein the degree of a chronological delay is adjusted as a function of the driving speed.

The vertical wheel force is influenced by the setting of a desired virtual target steering ratio between the steering wheel (15) and the steerable vehicle wheels (6').

Unlike with constant steering ratios, which represent a compromise between dynamic performance and comfort, here the steering rack’s toothing is modified by the steering stroke.