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BMW i3s traction control tech going in all BMW, Mini cars

The BMW i3s is essentially a warmed-up version of the i3 electric car we all know and love. The performance boost isn't huge — just 14 horsepower and 15 pound-feet of torque — but it also gets a new suspension, wheels and tires as well as an improved traction control system. We found the car to benefit from all the updates when we drove it for our First Drive Review, but now BMW has offered up more details on just how the traction control system of the i3s helps make it better to drive. The company says it'll expand the technology to all future BMW and Mini models as well. The i3s's system is calibrated to help it to pull away quickly from a stop, making full use of the instantaneous torque offered by the electric motor. It also improves stability when accelerating out of corners, when using regenerative braking and, of course, when the road conditions are less than ideal. The results are palpable, and with the other improvements the i3s definitely feels stronger off the line, as we found on our drive. It's also about a half-second quicker to 60 miles per hour, at 6.8 seconds. The secret is in the response time of the stability control, which BMW claims is 50 times faster than the conventional system. This is made possible by moving the control process into the powertrain itself, rather than a remote unit. This reduces the signal path and, thus, the response time of the traction control system. BMW's Head of Chassis Development, Peter Langen, said of it, "With their high levels of torque and instantaneous responses to every movement of the accelerator, electric motors already make significantly higher demands on driving stability systems than conventional power units." While engineered to make the most of the electric motor, BMW says the shorter cycles of this traction control system show promise for internal combustion vehicles as well. As such, we'll begin to see the improved technology applied across the BMW and Mini lineups going forward. Related Video:

Alex Zanardi back in the driver's seat with BMW

If there's ever been an inspirational story in the pantheon of motor racing history, surely it's that of Alessandro Zanardi. The Italian driver worked his way up the motor racing ladder, making it into Formula One and winning two CART championships for Chip Ganassi Racing back before the series re-merged into IndyCars. Tragedy struck in 2001 when he lost both his legs in a crash at the Lausitzring in Germany, but rather than accept his fate, Alex pushed on. Fitted with prosthetic limbs, he learned to drive a racing car with hand controls and got back in the driver's seat.
Zanardi drove for BMW in the European Touring Car Championship and then in the World Touring Car Championship that replaced it, landing on the podium several times despite his physical disadvantage. He left racing in 2009 to train for the Paralympics, winning two gold medals in London, but Alex apparently couldn't shake the racing bug. BMW modified one of its M3 DTM racers with hand controls for him to test later that year. And now he's returning to motor racing full time.
BMW has just announced that Zanardi will be driving a Z4 GT3 in the Blancpain Sprint Series, the successor to the FIA GT Series and short-distance counterpart to the Blancpain Endurance Series. The car has been modified with the hand controls the Bavarian automaker's racing department fitted to the aforementioned M3 DTM and will be fielded by the ROAL Motorsport team with which Alex challenged for the European Touring Car Championship last decade.

2015 BMW M3 Sedan

BMW's all-new M3 Sedan is dynamically nearly identical to its two-door M4 Coupe sibling: a stopwatch reveals that both are sub-four-second cars to 60 miles per hour, a racetrack proves that the mechanical twins are equally as adept on a road course and a full afternoon of driving on public roads demonstrates that each possesses talented everyday adaptability.
Yet after driving both BMW models back-to-back over two full days in Portugal, it's clear there are a few noticeable differences, both objective and subjective, that don't require instrument testing to reveal. All it takes is a few hours behind the wheel of both cars to conclude that one is slightly more agile, and the other a bit more twitchy. One has better outward visibility, while its counterpart is unquestionably more convenient.
It is the little things - subtleties attained through seat-of-the-pants observations - that eventually allow me to choose a favorite.