What feature do all open differentials share?

All open differentials allow opposing wheels to rotate at different speeds while cornering. This is a fundamental characteristic of open differentials, as they are designed to facilitate the difference in wheel speeds that occurs during turns. When a vehicle corners, the outside wheel travels a longer path than the inside wheel. An open differential permits the wheels to turn at different speeds, which is essential for smooth handling and stability. By allowing for this differential action, open differentials help improve traction and control, making them effective for many driving conditions.

In contrast, the other features mentioned do not accurately represent the function of open differentials. They do not lock wheels together or transmit an equal amount of torque to both wheels, and they do not specifically enhance traction on all surfaces. These attributes may relate more to other types of differentials, like limited-slip or locked differentials.