What is the primary role of the differential in a vehicle?

The primary role of the differential in a vehicle is to distribute torque to the wheels. This component is crucial in allowing the wheels on the same axle to rotate at different speeds, which is especially important during turns. When a vehicle turns, the outside wheels travel a longer distance than the inside wheels. The differential permits this difference in wheel speed while maintaining power delivery to all wheels, ensuring smooth and controlled handling.

This function contributes to better traction and stability, as each wheel can respond to varying road conditions without causing skidding or loss of control. The effective operation of the differential is essential for the safe and efficient performance of the vehicle. Other components mentioned, such as those involved in engine speed, exhaust filtration, or connecting the battery to the starter, serve entirely different purposes and do not relate to the differential's role in torque distribution.