Much like a mechanical limited-slip differential, torque vectoring subtly pulses the brake of the inside front wheel in a corner, directing more torque to the outside wheel, actually helping bend the car into a corner.

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But I see now, as I'm accelerating out of a shallow banked turn around 120 mph and I feel the torque-vectoring differential sorting itself out, that I've misjudged the car.

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The M5's reinforced active locking and torque-vectoring rear differential (the Active M-Differential) brilliantly adjudicates traction between the rear wheels.

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