Disclosure relates to a car tire driving apparatus capable of a tread variation, the on or off signal for the tread deformation input from the operator control panel and the driver operating unit to generate an on or off signal for the tread modified to check the operation of the driver an a controller for controlling to supply or cut off with a modified material having the electrical signals or the tread the desired signal based on the signal generated to generate an electrical signal or a magnetic signal for a change of the tread by using the rotational force of the drive shaft to occur car while driving portion, and an electric signal and supplies the electrical signal or a magnetic signal inputted from the signal generation unit based on the on-operation of the driver operating unit to the modified material provided in the tire tread, supplied to the modified material based on the off-operation of the operator control panel or magnetic signals is provided in part of the pattern formed in the supply block and the signal supply unit which outputs a notifying the feedback signal to the control unit a signal holding section for holding an electrical signal or a magnetic signal output of the signal supply section under the control of the controller, and a tire tread, the signal and by an electrical signal or a magnetic signal inputted from the supply of the molecular changes in the tissue it comprises a modified material of varying stiffness.
Accordingly, the present invention, even if the road surface condition changes due to seasonal characteristics, because a part of the tire tread pattern formed of a modified material may be deformed by the operation of the driver can cope quickly and flexibly.