Electrically assisted power steering system for motor vehicles

An electrically assisted power steering system for a motor vehicle, comprising:

• an input shaft in engagement with a steering wheel of the motor vehicle;
• an output member in engagement with wheels of the motor vehicle to be steered;
• an electric motor configured to transmit a power assist on one of the input shaft and the output member;
• a sensing unit configured to sense at least one steering-specific parameter, the at least one steering-specific parameter including a direction and intensity of a steering torque imparted on the input shaft;
• an electronics unit configured to process the at least one steering-specific parameter and to control the electric motor;
• and
• a detection unit configured to determine at least one parameter relating to a steering characteristic of an equipment variant present in the motor vehicle and to transmit the determined at least one parameter to the electronics unit, the electronics unit configured to control the electric motor in accordance with the determined at least one parameter relating to the steering characteristic of the equipment variant present in the motor vehicle;
• wherein the at least one parameter relating to the steering characteristic of the equipment variant present in the motor vehicle includes a parameter representing at least one tire characteristic of the motor vehicle;
• and
• wherein a plurality of tire versions are combined to define at least one characteristic group in accordance with the at least one tire characteristic.