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BMW X4 M40i spotted testing in Germany

The stream of segment-busting BMW variants is showing no signs of letting up, and with the latest addition now upon us, questions have been circulating as to whether the Bavarian automaker would do an M version of the new X4 crossover. The jury may still be out on that proposition, but the latest intel suggests that, while a full-on X4 M may not be in the cards, a next-best-thing X4 M40i is in the works. And that appears to be what we're looking at in this fresh batch of spy shots.
Spotted for the first time undergoing testing in Germany, this X4 is tipped to be the next addition to the M Performance line that's already given us near-boiling models like the M135i and M235i on the one hand and the diesel-powered M550d, X5 M50d and X6 M50d on the other. Power in this case is tipped to come from the same 3.0-liter turbo six as the upcoming M2, producing between 360 and 380 horsepower.
Unlike the current top-of-that-specific-line X4 35i, which has two tailpipes on one side, this partially-camouflaged prototype has one pipe protruding from each corner of the rear bumper, but looks like it could easily accommodate twin pipes on both sides. Expect commensurate suspension, brake, rolling stock, aero and trim upgrades to come as part of the package, though they likely won't be quite as substantial as those applied to the X5 M and X6 M.

Thermal imagery of BMW M4 DTM pit stop is red hot

A pit stop is a pit stop, right? The race car pulls in, the crew changes the tires, pumps in some fuel, maybe swaps out a busted body panel or squeegees the windshield, and off it goes for another heat. Only pit stops have become the focus of news lately for a number of reasons, whether it's because of mishaps (like the ones that prompted F1 to ban mid-race refueling), new time records (due largely to said ban) or interesting new ways to film the fast-paced action.
A few weeks ago we brought you footage of an IndyCar pit stop filmed from multiple angles courtesy of Google Glass. Now BMW has released a brief clip of one of its M4 DTM racers coming in for fresh rubber, all filmed by infrared camera. Its the kind of technology BMW uses to help optimize its German touring cars for competition, and now the Bavarian outfit has released some footage for fans to enjoy.
The resulting thermal imagery gives you an idea of how hot the car runs (and where the heat is emanating from), how warm they get the fresh rubber before they get it onto the car, and what kind of temperatures the pit crew is subjected to. Look closely enough in the 25-second video below and you'll even see the heat sputtering out of the exhaust pipes as the M4 downshifts into its pit box. (Just don't try adjusting your speakers, the clip is without audio.)

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.