Defining torque from a frame of reference does require the frame to be inertial for the standard equation ##\vec \tau = I\vec\alpha## to hold true. In a non-inertial frame, such as an accelerating car, pseudo forces must be considered, complicating the torque calculations. For example, while sitting in an accelerating car, the torque needed to maintain balance is influenced by the acceleration of the frame. Therefore, when analyzing torque in non-inertial frames, adjustments must be made to account for these pseudo forces. Understanding this distinction is crucial for accurate torque analysis in varying frames of reference.