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BMW Motorad reveals Concept Stunt G 310 in Brazil

BMW has been on a bit of a concept motorcycle bent lately, and each has taken a decidedly different approach from one another. The Motorad division did the Path 22 scrambler concept in June, the Concept 101 custom bagger in May, the Concept Roadster last year, and the Concept 90 retro racer the year before. Now it's at it again with the Concept Stunt G 310. As you might have guessed, the G 310 is a stunt bike. Its compact form is built around a single-cylinder engine canted rearwards with a rotated cylinder head to help optimize the weight balance. The intake was moved forward and the exhaust towards the rear, mounted under the seat, to enable the rider's freedom of movement. It has long travel in the suspension, but still rides on a short wheelbase – perfect for impressing the crowds. To that end, it was designed with collaboration from four-time stunt riding champion Chris Pfeiffer. It's also got a lockable throttle so the rider can take his hands off the controls (not advisable for the rest of us). The beefed-up secondary rear brake can be actuated by a squeeze of the finger. Axle pegs allow for additional foot-placement options, red crash bars protect the mechanical elements, and a specially designed "stunt tail" is milled from solid aluminum and provides an additional foot-hold. The shape is adorned with an eye-catching neon livery designed to give the impression of movement, even when it's sitting still. The bike will be unveiled in Sao Paulo, Brazil, at South America's preeminent motorcycle show. BMW Concept Stunt G 310 – Street. Style. Stunt. 06.10.2015 Munich/Sao Paulo. With the world premiere of the BMW Concept Stunt G 310 at South America's largest motorcycle show, BMW Motorrad is presenting a completely new side: the uncompromising interpretation of an aggressive and agile stunt bike based on a single cylinder study. Thanks to his experience as a four-times World and European stunt riding champion, Chris Pfeiffer, contributed to the realisation of the BMW Concept Stunt 310. "Stunt riding is a demanding and multi-faceted sport. Ideally you need a compact, agile bike which is also stable and robust at the same time. You have to achieve the ideal balance between aggressiveness and control", explains Chris Pfeiffer. Compact proportions, highest-level agility.

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.

BMW i8 official images leak ahead of Frankfurt [w/video]

The new BMW i8 plug-in electric supercar isn't set to make its official debut until September 10, when it will glide onto the Frankfurt Motor Show stage amidst a sea of flash photography. Of course, that isn't so true in today's world, where debuts are always preceded (often carefully) by "leaks."
Take this trio of images of the BMW i8 - there's just enough of the exterior on display in the profile shot to draw attention, without showing important styling points that might be present on the front or back of the car. The same goes for the video attached below. The cabin shot is cool, but isn't particularly earth-shattering when it comes to BMW interiors. As for the skeletal shot, we can see the 1.5-liter, turbocharged engine positioned between the rear axles, the battery pack found in what would be the transmission tunnel and the front-mounted electric motors.
We'll have a full set of live images when the BMW i8 makes its debut in Frankfurt next week. Until then, have a look in the gallery and at the video below, and let us know what you think of BMW's next big thing.