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Originally Posted by AtomicLabMonkey
With soft springs and bars that allow a good amount of roll, the roll inertia of the body can have a noticeable effect as you swing it hard from a turn in one direction to the other. This is a reason that SUV's typically have rollover problems; if you're going straight and crank it into a hard turn in one direction, the SUV will probably be fine... but if you then immediately crank the wheel back over for a hard turn in the other direction, the sprung mass builds up so much inertia as it's going through that large roll angle that it overcomes the fully compressed/twisted resistance of the springs and bars and just carries itself on over until the C.G. is outside the track width and it overturns. I don't know if that's a completely technically correct explanation, but it should be close.
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Here's a non-technical one: SUVs suck.