Quote:
Originally Posted by cooldude00
hi
can anyone explain the differences between performance control, servotronic power steering, VDC and variable sport steering?
i get the basics from the brochure on VDC and servotronic steering but the other 2 doesn't seem to be explained?
just interested in finding out more as it looks like quite a few folks have specced up these options esp the VDC.
thanks
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BMW Performance Control.
No two journeys are identical: in a curve, the outer wheels have a longer path than the inner. BMW Performance Control takes on this challenges and uses it to create a more dynamic driving experience by controlling each wheel individually.
In modern automobiles, the wheels on an axle are connected by a differential – a special gear that adjusts for this difference in length. BMW Performance Control takes this individual control a step further by changing engine output and if necessary applying braking force: the outer wheels get greater drive power, the inner less, and all four can engage with maximum traction. The BMW X3 literally drives into the curve, for an even greater sense of dynamic driving and excelling stability.
Handling can also be enhanced by the Performance Control option for the xDrive all-wheel-drive system. In a turn, Performance Control applies the inside rear brake and sends more power to the outside rear tire to help the X3 corner.
Variable Sport Steering.
It features a conical steering gear that makes the steering ratio quicker as the driver turns farther off center. This means that tight turns, like decreasing radius freeway on-ramps, require less steering movement, giving drivers more precise control. We like it, as well as the natural feel of the X3's steering. The steering is also nicely weighted, and the Sport and Sport Plus modes add a little more heft.
Variable Sports Steering should not be confused with BMW's Active Steering, which varies ratio and assist depending on speed. While we like that system as well, some critics have complained that it's hard to tell when the ratio will change, making the steering unpredictable.