This system is an internal can-bus tpms for racing car wireless tire pressure monitoring system, it includes internal sensors and receiver with can-bus port. Sensors measurement tire pressure and temperature data, then send these data to the receiver every 1s by wireless RF, The receiver send these data to CAN-BUS network by 500kbps/1000kbps, The instrument or other display device collect all tire data and display from can-bu network. When the pressure or temperature over or under warning valve value, the instrument will warn automatically to remind the users pay attention to the tires’ situation.