Originally Posted by
rogwick
Interesting point. Having DSC on and taking a quick (wet) corner can actually make you crash IMO. I have not experienced much of it myself but the Stability program counter acts what you want to do. For example, it does not control the steering. If you slide out, it will over-correct and cause you to steer an alternate direction. Would be interesting to have a complete and comprehensive go at the DSC in a controlled environment.
DSC OFF: Turn left, gas it hard, the rear will step out to the right
DSC ON: Turn left, gas it hard, TC kicks in, Stability control kicks in the vehicle attempts to correct the rear stepping out and consequently you over correct.
Like I said I have not had a comprehensive look at it, but I know the vehicle does not react the way you expect it to with DSC on, therefore it is not 'always' a good thing. The idea behind it is if you're travelling along and something cuts in front of you, you swerve, too much, swerve opposite direction...crash. DSC controls the wheels from slipping so after the initial swerve, maximum traction is kept (traction control) ensuring a safe recovery from the initial first and violent swerve. It was designed to save lives on open roads.