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BMW broadens engine bolt recall to nearly half-million cars worldwide

Almost one month ago, we reported on a BMW investigation into a potentially defective bolt that lived in the company's VANOS variable valve timing system. At that point, the potential recall was seemingly limited to Chinese-market cars; the company was filing a recall application with Chinese officials.
Today, Bloomberg is reporting that the engine bolt issue has expanded into a recall for several world markets, involving some 489,000 vehicles. BMW was able to verify that report to Autoblog, while also providing a great deal more detail about the issue and vehicles affected.
The recall affects vehicles powered by N55 inline six-cylinder gasoline engines equipped with VANOS and Valvetronic technologies. 1 Series, 3 Series, 5 Series and 5 Series Gran Turismo, X3, X5, X6 and Z4 models from the 2010 to 2012 model years are included, as is the 2012 6 Series.

Cafe racer motorbikes storm Japan

Japan may be best known, at least among motorcycle enthusiasts, for its sport bikes. But as we found at the Tokyo Motor Show this year, Japanese motorcycle manufacturers are capable of producing all kinds of motorbikes. And to our delight, that includes cafe racers.
Along with the myriad electric bikes, dirt bikes, crotch rockets and scooters, the halls of Tokyo's Big Site convention center this year were full of the retro-infused rides we love. Chief among them was the Bolt (shown above) which Yamaha exhibited alongside their various electric two-wheelers, sporting a delicious metallic blue paintjob, inverted handlebars and hanging mirrors, machined metal bits, blacked-out trim and saddle brown leatherwork.
Honda was also on hand with a new EX version of its '70s-style CB1100 retro roadster in sinister and low-key matte black. And this was our first chance to check out BMW Motorrad's new birthday present to its 90-year-old self, the R NineT, a model recently unveiled at the EICMA motorcycle show in Milan. But one of the most amusing retro rides we came across was the Honda Monkey Limited, a mini bike that makes the new 125cc Grom (which was displayed alongside it) look positively gigantic.

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.