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  • Based on what you were saying the bike was adjusting for the amount of brake input to avoid locking the rear and when the system failed it locked the rear instantly. Am I arriving at the right conclusion?

    No, the traction control completely failed both on original corner entry and on subsequent input adjustment to modulate the power to the rear wheel, causing megaskidz both on the bike and in my trousers.

  • How much difference does it make to throttle control in terms input? If that makes any sense, as in how much electronic input is there?

  • I guess that depends on the bike / system.

    For the Tracer 900, it completely cut throttle input on rear wheel traction issues when upright and limited throttle input at an angle. This was controllable at three levels.

    ~~Whilst less controllable, I believe the BMW system does the same thing. ~~

    From the manual:

    Traction control is available in two versions:

    • without provision for the bank angle: Automatic Stability Control ASC. ASC is a rudimentary function intended to prevent falls.
    • with provision for bank angle: Dynamic Traction Control DTC. DTC regulation is more delicate and more comfortable thanks to the additional bank angle and acceleration information.

    Traction control compares the front and rear wheel circumferential velocities. The differential is used to compute slip as a measure of the reserves of stability available at the rear wheel. If slip exceeds a certain limit, the engine management system intervenes and adapts engine torque accordingly. BMW Motorrad ASC/DTC is designed as an assistant system
    for the rider and for use on public roads. The extent to which the rider affects ASC/DTC control can be considerable (weight shifts when cornering, items of luggage loose on the motorcycle), especially when the style of riding takes rider and machine close to the limits imposed by physics.

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