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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 M3 and M4 will rock 430 hp from twin-turbo six with standard manual [w/video]

We're not sure which spec we're most intrigued by for the new BMW M3 and M4: the twin-turbo six-cylinder with 430 horsepower and "far beyond" 369 pound-feet of torque, the 3,300-pound curb weight or the standard six-speed manual transmission with automatic throttle blipping on downshifts. That engine is fitted with both Valvetronic and Double-Vanos, twin-wire arc-spray coating in the cylinders instead of liners to save weight, a track-ready cooling system with additional radiators, a forged crankshaft, dry-sump lubrication and a magnesium oil sump. BMW says its "high revving concept" has a redline beyond 7,500 rpm.
In the M4, it will be pulling a coupe with "a weight of just under 1,500 kilograms," which is 3,300 pounds to you and me. That number is said to include no driver and 90 percent fuel, but we're still waiting on the exact number and specs. BMW says it's "around 80 kilograms lighter than a comparably equipped predecessor model," putting the power-to-weight ratio at something like 7.68 pounds per horsepower at the same time as it helps reduce fuel consumption by 25 percent. The use of carbon fiber reinforced plastics (CFRP) for the roof, drive shaft (with no center bearing), trunk and front strut brace, and forged aluminum for suspension components, have aided in the weight loss. This time around, the sedan - the M3 - will also get a CFRP roof.
The default option will be a six-speed manual.

2015 BMW X6 stays the course with more power, RWD model

What would this world be without the BMW X6? Oh, sure, the whole coupe-crossover design trend surely would have started somewhere, but BMW was the first, launching its odd duck back in 2008. Much as we like to harp on the X6 (for being less functional and more expensive than the X5 on which it's based), people around the world sure do seem to like the thing, BMW having sold some 250,000 examples since the CUV's birth. And as you first saw thanks to leaked images this morning, the second-generation X6 has just arrived.
The shape is familiar, as are specific styling elements like the larger headlamps (now available with a full-LED treatment) and taillamps, mimicking those found on the X5. Two trims are available - xLine and M Sport - the former taking a more subdued approach, while the latter uses the traditionally bulgy and aggressive M-badged kit, with larger air intakes and matte aluminum grille bars. All X6s come standard with 19-inch wheels, and 20s are optional.
Regardless of trim, BMW will now offer the X6 in three guises here in the United States: sDrive35i, xDrive35i and xDrive50i. Dissecting the nomenclature, that means the first two models will be powered by BMW's 3.0-liter turbocharged inline-six, good for 300 horsepower and 300 pound-feet of torque. The sDrive X6 uses rear-wheel drive, while the xDrive, of course, uses all-wheel drive. Moving up, the xDrive50i uses the same twin-turbo 4.4-liter V8 as its predecessor, though power has been increased to 450 hp and 480 lb-ft. All X6 models are fitted with an eight-speed automatic transmission, and BMW says that the new powertrains are more efficient than before, though official fuel economy numbers have not yet been released.