What does a differential do?

A differential is a crucial component of a vehicle's drivetrain that allows the wheels to rotate at different speeds, particularly when the vehicle is turning. When a car turns, the outside wheel needs to cover a larger distance than the inside wheel due to the curvature of the turn. The differential ensures that each wheel can turn at its appropriate speed without causing tire slippage or excessive wear. This capability enhances handling and stability while improving overall traction.

When a vehicle turns, the inside wheel naturally rotates slower than the outside wheel. The differential accommodates this difference in speed, providing a smooth driving experience and maintaining control during maneuvers. Thus, driving two wheels at different speeds is essential for effective performance, particularly in turning situations.