?What is a differential
A differential is a device that divides engine torque into two parts and allows each part (output) to spin at a different speed.
Today, differentials are found on all cars and trucks, as well as on all-wheel drive vehicles. In addition to having a differential between the two moving wheels, all-wheel drive cars require a differential between the two pairs of front and rear wheels. Because the front and rear wheels rotate at different speeds during the rotation of the car.
There is no central differential in cars with a choice between two-wheel drive and four-wheel drive. For this reason, these cars can not easily turn on hard surfaces when the wheels are moving.
