ASC - dangerous!!!!

[DJLogan33@xxxxxx]

I own a 1999 M Coupe with ASC.
When it feels rear wheel slippage, it cuts power and or applies brakes to the 
wheel this it thinks is slipping.
 
I have attended several high speed BMWCCA driving schools and know how to 
handle a car fairly well at high speeds. 

If you are a dead stop in snow, it might be a good thing, but if you are at 
high speed, it can cause you to loose control of the car. 
I am speaking from experience. I was driving my M Coupe on a twisty road with 
a couple of dips two months ago. 
I was going fairly fast with the ASC on. I came out of curve with a small dip 
and had to turn slightly to the left while braking. 
Apparently the ASC system felt rear wheel slippage and started cutting power 
and/or applying brakes, which caused the rear of the car to fishtail 
violently.
I could not get the car under control and drove off the road and caused $3000 
damage to the car.

After the accident, I did a lot of investigation work on the ASC system. 
I found numerous facts warning of it "Intervenes too harshly"
BMW replaced the ASC system with the DSC system which "detects and corrects 
abnormal under or over steer conditions that can result in the loss of 
control."
DSC, "helps restore directional control."

I do not recommend anyone using the ASC system, unless you are at a complete 
stop in heavy snow.
I deactivate my ASC system every time I start the engine and I advise 
everyone else to do the same.

Dennis

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