When it comes to cars, LSD stands for limited slip differential, a way of helping you in tricky driving situations. Differentials help wheels attached to the same axle spin at different speeds. Limited slip differentials come into play if one wheel is on a more slippery surface than the other -- for instance, if one of your tires is on a patch of ice. By increasing the torque of the non-slipping wheel, your car is given the momentum to get off the ice.
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