A key part of getting a car's power to the ground effectively is the differential, which uses gearing to regulate the split of power between wheels on an axle. This video shows exactly how it works.

Horsepower is useless if you can't get it to the pavement. As a result, traction control and differentials are fitted to your car to control how an engine's output is transferred to the road, helping ...

While many car enthusiasts know how a differential works, very few actually know what it looks like inside your differential cover as you're driving down the road. Gale Banks, founder of diesel ...