Wheel data detection system

A wheel data detection system includes a wireless data detection device and a data receiver. The wireless data detection device includes: a body adapted to be mounted to an inner surface of a rim, and having a closed end, an open end disposed to be in spatial communication with a chamber of a wheel, and a cavity defined between the closed and open ends; a radio frequency unit for receiving and transmitting radio signals; a detector for detecting pressure in the cavity and for generating a pressure signal according to the pressure detected thereby; and a control unit for processing the pressure signal into a data output. The radio frequency unit converts the data output received from the control unit into the radio signal to be transmitted thereby. The data receiver receives the radio signals transmitted by the radio frequency unit.