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Lift-off oversteer
Lift-off oversteer (also known as snap-oversteer, trailing-throttle oversteer, throttle off oversteer, or lift-throttle oversteer) is a form of oversteer in automobiles that occurs while cornering when closing the throttle causes a deceleration, causing the vertical load on the tires to shift from the rear to the front, in a process called weight transfer. This decrease in vertical load on the rear tires causes a decrease in the lateral force they generate, so that their lateral acceleration (into the corner) is also decreased. This causes the vehicle to steer more tightly into the turn, hence oversteering. In other words, easing off the accelerator can cause the rear tires to lose traction, with the potential for the car to leave the road tail first.
==Causes and countermeasures==
This type of oversteer is often more pronounced in rear-engined cars and cars with swing axle rear suspension. Rearward centers of gravity (such as older Porsche 911s) enhance this effect, though technically any vehicle can experience lift-off oversteer. Various suspension enhancements, such as a Weissach axle, Passive rear wheel steering, or a multi-link suspension, can limit a vehicle's tendency to oversteer in this situation. Even the handling of the Chevrolet Corvair improved in final years of production through the use of enhanced anti-roll bars, according to John DeLorean's book, ''On a Clear Day You Can See General Motors''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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