Official 2014 BMW M3, M4 Photos Leak Online

Official photos leak ahead of the M twins' official debut.

strong>According to some sources, the new 2014 BMW M3 and 2014 BMW M4 were supposed to be revealed via Gran Turismo 6 tomorrow – but in typical Internet fashion, photos of both production-ready cars leaked onto the Web.

Although it’s refreshing to stare at the new 2014 bmw M3 sedan and its two-door M4 companion without swirly camouflage applied to their outer surfaces, the appearance of the finished product is hardly surprising. In fact, both cars closely resemble the 2014 BMW M4 concept shown this past summer at the Pebble Beach Concours d’Elegance. Both cars build upon the base styling of the F30/F32 model series with massive hood bulges, large front fender vents, deeply sculpted lower air dams with enormous air intakes, and a rear diffuser to match.

You can forget those rumors of wild triple-turbocharged engines: both the 2014 M3 and 2014 M4 are powered by the S55, a twin-turbocharged version of the automaker’s ubiquiotous 3.0-liter inline-six-cylinder engine. In M-guise, this engine delivers somewhere around 430 hp and 369 lb-ft of torque. Compared to the hairy 4.0-liter V-8 used in the last-generation M3 range, output increases by 16 horsepower and 74 pound-feet of torque.

According to BMW, that engine is also 22 pounds lighter than the eight-cylinder S65B40 in the last BMW M3. That ties in nicely to other weight saving measures employed throughout the new M twins. Both the 2014 BMW M3 and 2014 BMW M4 boast one-piece prop shafts made from carbon fiber that saves 11 pounds, while the optional exposed carbon fiber roof whittles another 14 pounds from car. We’re told the M4’s curb weight could weigh in as low as 3300 pounds, which would be a 400-pound drop compared to the previous car.

Based upon a brief ride in an early 2014 BMW M4 prototype, we think the 2014 M4 seems “agile, eager, and responsive.” We’re also told BMW engineers were able to dial the electromechanical power steering assist to feel like the last M3, which used a hydraulic rack. We won’t know for sure until we drive the new 2014 M3 and 2014 M4 – in real life, not in Gran Turismo – for ourselves.

Look for more details and images of the new 2014 BMW M3 and 2014 BMW M4 to emerge later this week, followed by a formal physical world debut at the 2014 Detroit auto show in January.