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Old 03-31-2009, 07:39 AM
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Quote:
Originally Posted by x5beamr
How about Active Steering? Anyone got it?
Yep, one of my favorite features. So easy to maneuver this heavy beast when parking and at slow speeds. So easy to drive at high speeds -- tracks great.

Here's a reviewer's comments when comparing two 2009 5-series models:

Active Steering is perhaps the most significant new technical achievement. This system, part of the optional Sport package, electromechanically adds a positive or negative steering angle to the setting chosen by the driver, via a planetary gearset integrated into the steering column. This reduces steering motion at low speeds (say, while parking) and when negotiating tight turns on curvy roads, requiring only two turns lock-to-lock rather than three. It also makes the steering much more direct at high speeds. Driving two 5-series-one equipped with Active Steering and one without-back-to-back on an autocross course, we found the car equipped with Active Steering allowed us to hustle through much more quickly and with far less understeer than the car with BMW's conventional, but still excellent, rack-and-pinion setup. On twisty seaside roads, it takes a little getting used to, because you're expecting to have to cross your arms a lot more than is actually necessary, but the results are noteworthy. Philip Khn, Active Steering project manager, maintains that the system "is such a huge leap in technology, it's comparable to the introduction of ABS."
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