Tire condition monitoring apparatus

A tire condition monitoring apparatus monitors the condition of a tire (20) of a vehicle. The apparatus includes a transmitter (30), a receiving antenna (41), and a receiver (40). The transmitter (30) wirelessly transmits data indicating the condition of the tire (20). The receiving antenna (41) receives the data transmitted by the transmitter (30). The receiving antenna (41) is attached to a non-metallic body of the vehicle that is located close to the tire (20). The receiver (40) is installed in the vehicle for processing the data received by the receiving antenna (41).