What does a differential do?

The differential is a crucial component in a vehicle's drivetrain, allowing the wheels to rotate at different speeds, particularly during turns. When a car turns, the outside wheels travel a longer distance than the inside wheels. The differential enables this by allowing the wheels to rotate independently of one another.

This functionality is essential for maintaining traction, stability, and control of the vehicle, as it prevents tire scrubbing and uneven wear. Without a differential, both wheels would have to spin at the same speed, leading to potential handling issues and loss of grip. Therefore, the correct understanding of the differential's role in driving two wheels at different speeds is fundamental in the context of vehicle dynamics and operation.