Method of monitoring conditions of vehicle tires and tires containing a monitoring device therein

An apparatus for monitoring an engineering condition of a tire comprising:

• a flexible housing having a hardness of from about 50 to about 95 on the Shore A scale, said housing including a first surface which can be adhered to a second surface located within a pressurizable cavity of a tire so as to minimize stress, strain, cyclic fatigue, impact and vibration;
• and
• a monitoring device positioned within said housing, said monitoring device including a battery having an active mode and a dormant mode, a circuit for data band switching, an integrated circuit including data storage, sensors for sensing the engineering condition, means for converting said sensed condition to data;
• means for energizing the circuit for data band switching to activate the battery from the passive mode to the active mode;
• and
• means for transmitting said data responsive to a signal while the power source is active;
• means for energizing the circuit for data band switching to deactivate the battery from the active mode to the passive mode after transmitting said data.