Fully unlocked, No not usually. Of the bikes that I did look at, all that had a computer screen did allow you to change tire size and associated settings. That is the most basic function of the bicycle computer, to display speed, odometer and power settings. So I assume they all knew tire size adjustments would be necessary to dial in the accuracy of the computer. As for battery low voltage cutoff, Most do not allow you to go below the minimum value they set but they don't set that value to the dangerous level of 38.5v the first bikes released at or the slightly less dangerous 40.0v that ours is currently set at. What I wonder is, Did lectric learn anything from this and the October recipients of the bicycle have any different settings?