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Originally Posted by Lobo1186
what is preferable... LSD or open?
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Performance-oriented drivers prefer LSDs because they vastly reduce unwanted wheelspin, in turn making the car put down the power much more effectively, especially in turns. An LSD is also much better at dealing with low-grip road situations, such as when driving through snow and slush.
The downside to an LSD is in some situations, it can make the car a bit of a handful. This is because when only one wheel breaks free, not much typically happens other than a smokeshow and some squealing (which is what my Boxster tends to do). When both break free, you need to be ready to deal the back end losing grip. Not that oversteer won't happen with an open diff, it's just that when it does happen with an LSD, you're usually going faster, and that makes everything more interesting. (taken from my experience with my torsen LSD-equipped IS300 v. non-LSD versions).