Abstract: The invention relates to a motor vehicle having a tire-pressure control system wherein pressure values in the tires are measured by respective tire-pressure control devices (4a to 4d) and are transmitted from these devices via a central antenna (6) to a central unit (10). The central antenna is mounted beneath the vehicle on an electrically-insulating surface. The antenna is preferably mounted on the surface of a fuel tank made of electrically-insulating material. With an arrangement of the central antenna (6) as described above, excellent reception of the data transmitted by the tire-pressure control devices (4a to 4d) is ensured.

Abstract: The invention relates to a method for carrying out the allocation of tire pressure control devices (4a to 4d) to wheel positions in a tire pressure control system of a motor vehicle. Each tire pressure control device (4a to 4d) transmits, at certain time intervals, its individual identifier and a lengthened high frequency signal to the central unit (10) of the tire pressure control system. The high frequency signals have an individual trace which is dependent upon the rotational angle of the wheel and on the time because of the geometry of the wheel box and as a consequence of the rotation of the wheel. In the central unit (10), a time point is fixed from two sequential high frequency signals at which the wheel assumes the same angular position in each case with this wheel being the wheel from which the signals were transmitted. The corresponding wheel has made an integer number of revolutions between the two time points.