State-of-the-art Dynamic Stability Control

Like all current U.S. BMW models, Z4s come standard with Dynamic Stability Control, a comprehensive, state-of-the-art traction and stability system; DSC appears here in its newest generation, with the advanced Dynamic Traction Control function.

It has always been possible to de-activate DSC functions (except antilock braking) via a console switch. In the Z4 this requires a long (3 sec. or more) push on the switch. A briefer push, however, selects the new Dynamic Traction Control (DTC) function.

The normal traction-control function not only applies the brakes of individual wheels as they start to slip, but also reduces engine power. This keeps the vehicle very stable, but under certain conditions (such as climbing a snow-covered hill) can leave little power to move forward. At low speeds and in gentle cornering maneuvers, DTC allows more wheel spin by de-activating engine intervention. As speed and/or cornering vigor increases, DTC progressively restores engine intervention. To the driver, DTC means -

• Enhanced traction under low-friction conditions (sand, gravel, deep or packed snow).
• Allowing greater use of the driver's skill at low speeds under these low-friction conditions.
• Maintenance of full DSC stability benefits under higher-speed, more vigorous driving conditions.

All the familiar DSC functions are included in the Z4 system:

• All-speed traction control
• Electronic brake-force proportioning
• Antilock braking (ABS)
• Cornering Brake Control, which modifies braking action to enhance stability when the brakes are applied while cornering
• Dynamic Brake Control, which reinforces the driver's pedal effort under emergency braking conditions
• Cornering and avoidance stabilization.