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Big difference (much more) (archive)
[ Follow Ups ] [ 3-series (E46) Message Board ] [ Msg. Board FAQ ]
Posted by Emission on November 27, 2000 at 00:45:24:

In Reply to: what's the dif bet ASC and DSC? posted by FredC on November 26, 2000 at 23:03:59:

ASC+T was the original traction control system for BMW's. It used ABS sensors to measure wheel speeds and determine slippage. If one driving wheel (rear) moved faster than the other, the brakes were applied to the spinning wheel only. This forced the differential to put power to the other wheel. If both wheels slipped, throttle was reduced to control spin. The system worked at all speeds.

DSC is considered the next generation. It does everything ASC+T does, but adds a yaw sensor and steering wheel sensor (and more). These determine if the car is moving off the desired path in relation to steering wheel angle. It also watches for oversteer or understeer. If any of these are noticed, the system can brake any individual wheel to bring the car back to control (other companies call it "stability control").

Note: Neither of these systems can overcome physics. Both of these systems can be turned off via a dash switch.

I wouldn't use either on a track. I consider them a co-pilot to everyday driving.


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