Traction control

[willy5]

Has anyone experienced the following?In the wet, if you floor the accelerator, the back swings out a little before the traction control catches the slide. It was in Sport mode where the traction control is supposed to be fully functional.In the dry, accelerating thru a corner, the car slides on all 4 wheels, traction control does not kick in.The tyres are Bridgestones.

 

[tIANcI]

I dun think traction control is suppose to defy the laws of physics. It stops the whole situation from getting worse. Your second example ... your car is carrying speed, it has inertia. In a corner you are changing direction. That is why you car skids. That is the basic problem. Traction control does not stop that.

 

[Game-R]

It's normal. Traction Control and Stability Control systems can only act when it detects a discrepancy between the speeds of each wheel. However if you're going around at parking lot speeds, there isn't much speed difference to detect. Added to that BMW DSC+T tends to let you have a little bit of "fun" before restraining the engine speeds to regain traction.

The other system is the Stability Control which plays into effect when you skid around a corner, but if all four wheels are skidding and yet maintain the same rotation speed between all of them, the system can't react yet till there is a speed inconsistency between the wheels.