An after-market limited slip differential intended for the Bmw 1-series, 3-series and Mini versions is offered by AC Schnitzer which will provide quick acceleration on corners and in slippery surfaces such as dirt, snow or ice. The limited slip differential works by transferring surplus power to the driving axle that is about to slip providing an uninterrupted flow of energy so that constant propulsion is ensured in all driving conditions.AC Schnitzer also has a limited slip differential for the front-wheel drive Mini which enhances steering characteristics. Through this modification AC Schnitzer attains rapid cornering speeds and lowered propensity to understeer providing the driver power reserves for an optimum driving experience.

Source: 4wheelsnews.com