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Function
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Non-sport-oriented vehicles traditionally house stock open differentials. An open differential directs increased wheel rotation to the outside wheel while turning. When a tire loses traction, an open differential directs power to the wheel with the least amount of resistance. A limited-slip differential sends equal power to the wheels when driving straight and compensates traction loss by sending more power to the wheel with the most traction.
Performance
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Since an open differential directs more power to the wheel with the least amount of resistance, in the event of a loss of traction when turning, drivers will more easily lose control. Limited-slip differentials distribute wheel power where needed, reducing traction loss around turns. Better management of wheel rotation increases handling, traction and safety from spin-outs during quick turns.
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Considerations
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Performance-oriented drivers will benefit from handling and traction gains associated with limited-slip differentials. Non-performance-oriented drivers who do not face adverse road conditions such as rain, mud or ice may find no advantage to limited-slip differentials.
Read more: Limited Slip Vs. Standard Open Differential Handling | eHow.com
Limited Slip Vs. Standard Open Differential Handling | eHow.com