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[Slvr e39]

There is a DSC button next to the Sport button. The guy at bmw told my dad originally (my dad caught him in the lie) that the sport button tightened the supension. But in reality it just improves the responce of the gas pedal. DSC is the only security feature, other than that, make sure it is past breakin and and warmed up completely, then go lay down some rubber...