What is car differential

This time i need some advice on a thing called differential. I drive a 1987 e30 325i auto to manaul converted cabriolet and wanted to know what a differential is and what it does and if you know then please let me know what diff it has on mine”

The differential on your car is also known as the “rear end” as it’s on the back and drives the rear wheels. Most cars today are front wheel drive and have them in the front instead. They are called differentials because they allow their drive wheels to turn at different speeds when cornering–otherwise the tires would skid as the outer cornering tire has to move a larger distance than the inner tire and a differential allows this to happen. The differential has gear ratios to drive the car correctly so the engine isn’t strained too much or has to spin too fast.