TIRE TESTING DEVICE

According to an embodiment of the present invention, there is provided a tire testing device including a vehicle, and a test unit provided in the vehicle and capable of supporting a test wheel on which a test tire is mounted in a state in which the test wheel is in contact with a road surface, the test unit including a power unit configured to output power for rotationally driving the test wheel, and the power unit including a rotation output unit configured to output a rotational motion of a rotation speed corresponding to a traveling speed of the vehicle, and a torque applying unit configured to add torque to the rotational motion to output the torque.