2015 Bmw M4 on 2040-cars

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Watch two championship-winning DTM cars from BMW go head-to-head

BMW recently had a little fun with two of the company's past DTM champions. Roberto Ravaglia and Bruno Spengler, winners of the 1989 and 2012 championships, respectively, both showed up at the world-famous Hockenheimring with their title-winning cars. The two swapped seats, with Ravaglia taking the helm of Spengler's BMW M3 DTM racer and Spengler sliding behind the wheel of Ravaglia's first-generation M3 racer in the classic BMW Bank livery, and headed for the track. Spengler got a 23 second head start in the first-gen M3 with Ravaglia chasing behind.
It didn't take long for the older hotshoe to sort out his new ride and close the gap. The short clip below follows the two as they make their way around the circuit, but the really interesting portion comes when the pair begin discussing what they like and don't like about each other's machines. You can check out the full video below for yourself.

BMW dishes on 'lightweight' 2014 M4

BMW's M cars are not what we'd call featherweights. Sure, the big, bruising twin-turbocharged V8s deliver a lot of power, but the fact of the matter is that more weight often equates to less fun.
Which is why we're so excited over a recent sit-down the blokes at Top Gear had with BMW's product manager for small and medium cars, Matt Collins. The chat led to talk of the M3 Coupe replacing M4. Collins confirmed that, yes, the new M4 would be turbocharged. The new engine will also be a six-cylinder, which should make purists happy.
"What we'd like is more focus on lightweight engineering." -Matt Collins

Researchers halfway to cutting carbon fiber costs by 90%

Carbon fiber has been utilized for decades to build racecars, as a means to cut weight while maintaining strength. But until recently, the space-age material has been largely absent from the street on anything but supercars because of the expense to use it. Recently, BMW signaled a major shift in that trend when it starting using carbon fiber reinforced plastic panels on the i3 and i8. This relatively small scale start might be just the beginning; the German company believes that a breakthrough to inexpensively manufacture the lightweight stuff is just on the horizon.
MAI Carbon Cluster Management GmbH counts BMW, Audi, Airbus, the German government and many other organizations as supporters, and it's researching how to make carbon fiber cheaper to produce, according to Automotive News Europe. The company thinks it can reduce costs by 90 percent in the near future. "We've certainly reached a halfway point on our cost-cutting target for suitable carbon-fiber parts," said project head Klaus Drechsler to Automotive News Europe.
Unfortunately, it isn't entirely clear just what MAI Carbon is doing to make such a huge leap possible. However, a recent post on the company's website talks about a new form a carbon fiber using a thermoplastic matrix that could be cured in less than three minutes. That's compared to about 90 minutes in the traditional process with an autoclave.