2002 M5 on 2040-cars

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BMW looking to fix i3 acceleration problem uncovered by Consumer Reports

The BMW i3 has been hailed in some quarters as the future of electric mobility, what with its innovative carbon-fiber-reinforced plastic body and commitment to sustainable materials wherever possible. The modernist little hatch is even available with a 650cc two-cylinder gas engine with 34 horsepower to act as a range-extender for those who want it. However, that optional engine might have a drawback - at least for the moment.
Consumer Reports brought the problem to light when one of its drivers was behind the wheel of an i3 using the range-extender. When the driver attempted to pass another vehicle on a rolling, two-lane road, the BMW suddenly had no power to accelerate - a scary situation. CR started examining the car and found something pretty shocking: After driving at a constant speed for a while without any regenerative braking in range-extended mode, acceleration to 60 miles per hour plummeted from about 9 seconds normally to a staggering 27 to 40 seconds in their testing.
A BMW spokesperson told CR that it knows about the problem and has a fix coming next spring that also works on current models. The upgrade includes a state of charge indicator, a warning about loss of power and uses the car's navigation to boost the battery before driving on rolling terrain. It is not clear if the severe power deficiency will also eventually result in a recall.

BMW to offer carbon fiber wheels in a year or two

The Citroën SM sat on the first set of production glass fiber and resin wheels in 1972 when parent company Michelin developed the exotic hoops in order to take the SM rallying. It wasn't until 2008 that we got the first all-carbon-fiber wheel for passenger cars in the form of a prototype model from Weds Sports in Japan that remained a prototype. Australian company Carbon Revolution followed that a year later with its CR-9 all-CF wheel, first introduced on the Shelby Ultimate Aero and now available for independent purchase for about $15,000 per set. BMW could be the first OEM to offer entire wheels in carbon fiber reinforced plastic in two years.
The wheels - either all-CFRP or using a CFRP rim and alloy spokes - were shown off during BMW's Innovation Days in Munich and are products of the development work done on its i-branded cars. The full-CFRP wheel is 35-percent lighter than a forged alloy wheel, the hybrid alloy and CFRP wheel is 25-percent lighter, making for a decent drop in unsprung rotating weight. As demonstrators during a tech day the wheels aren't yet in the pipeline for production and EU approval, but an article in Auto Express claims that they could be on the market as soon as two years from now.
Other possible parts include a full carbon fiber steering wheel and propeller shaft, the latter of which is coming as a single-piece component on the new M3 and M4. BMW is also talking up its use of secondary carbon fiber - waste material from i3 and i8 production - that can be used for items like IP support structures, seat frames and spare wheels in place of traditional metals like aluminum and magnesium. There's an excerpt of the Innovation Day press release below with more details.

Alex Zanardi talks new challenge at 24 Hours of Spa with BMW

"I have overcome greater things in my life than driving at night." When considering Alex Zanardi's tumultuous life and racing career, the notion that he might be worried about racing for the first time at night seems patently absurd the moment I pose the question. But as I've discovered previously, ask Zanardi a question and his reply - even a brief one - will offer analysis. "I'm really looking forward to it," he says, before adding: "Also, it will be much cooler." Zanardi is talking about the latest installment in his racing career - the 24 Hours of Spa - where he will race a BMW Z4 GT3 alongside fellow ex-Formula 1 driver Timo Glock and DTM driver Bruno Spengler. For the second year, Zanardi is running with ROAL Motorsport, and the team has the full weight of BMW behind it as it prepares to go up against 57 other cars on the historic Belgian circuit this weekend. I first met Zanardi last year at Brands Hatch on a hot May afternoon after his one-hour Blancpain Sprint Series race. He was exhausted and downing can after can of cola but still happy to chat to fans as he cooled off. I ask why, if that was such a tough experience, he is prepared to do it for 24 hours. "It's a good question, why would I?" he ponders aloud before quickly adding: "I am confident I am as well-equipped as I can be to face such an enormous commitment." That confidence comes from three developments that have allowed him to be the first disabled driver to race the Spa 24H. Firstly, his athleticism; since Zanardi lost both his legs in the horrific CART accident at the Lausitzring in 2001, he has drawn admiration for his subsequent achievements as a racing driver and paracyclist; the Italian won two golds and a silver at the 2012 London Paralympics in handcycling. The man is seriously fit. The next major change is inside the Z4 cockpit, where he has worked with BMW engineers to adapt the braking system without hindering his able-bodied teammates; having two others sharing the car with him is a new challenge for both Zanardi and BMW. New controls, particularly the brake pedal, were designed with impressive results. "[The engineers] made my life easier quite dramatically via ergonomics, pushing the brake pedal and the footrest where I put my prosthetic feet to the side of the space that was available. "This makes everything better for me. The ratio of the brake pedal is changed.