2000 Bmw 5-series M5 on 2040-cars

Auto blog

BMW M4 vs. Lexus RC F in Head 2 Head sports coupe showdown

It's the showdown everyone's been looking forward to, the East versus West grudge match of the year. We're talking, of course, about the BMW M4 versus the Lexus RC F.
Although BMW uses a twin-turbo straight-six and the Lexus uses a free-breathing V8, the two are pretty closely matched on paper: a luxury coupe with over 400 horsepower channeled to the rear wheels.
The BMW has been doing these cars for longer, and the M4 boasts a higher power-to-weight ratio. But then the RC F has more power - and without forced induction to break up the rev range. So which is the better luxury muscle coupe? Watch the latest episode of Motor Trend Head 2 Head to find out.

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.

Karma Automotive partners with BMW for powertrains

Now in the process of rising from the ashes of Fisker, the newly renamed Karma Automotive has announced a powertrain supply deal with BMW. Only instead of Karma providing BMW with technologies (as Tesla has for Daimler and Toyota), this deal goes the other way around. It is BMW that will be providing Karma with its powertrain components moving forward. Little in the way of specifics was disclosed regarding precisely what the supply deal will entail. However according to the statement below, it will include "high voltage battery charging systems and a wide range of hybrid and EV systems." BMW has demonstrated its competence in developing and manufacturing such components with vehicles like the i3 and i8, and ActiveHybrid versions of the 3 Series, 5 Series, and 7 Series sedans. Karma Automotive is what Chinese component manufacturer Wanxiang renamed the company formerly known as Fisker Automotive once it acquired the rights to the company and the Fisker Karma which it previously produced. The brand name, however, remained the property of Henrik Fisker's coachbuilding operation. The original Fisker Karma was powered by a 2.0-liter turbo four supplied by General Motors, with a lithium-ion battery pack from A123 systems. Karma Automotive Signs Supply Agreement With BMW COSTA MESA, Calif., Nov. 12, 2015 /PRNewswire/ -- Karma Automotive announced today that BMW has agreed to be a supplier in ensuring their vehicles are built with the highest quality automotive parts. BMW will supply Karma Automotive with their latest powertrain components, including high voltage battery charging systems and a wide range of hybrid and EV systems. Throughout automotive history, BMW has been globally recognized for engineering and manufacturing world-class products. They are a proven technology leader and renowned for conceiving and delivering groundbreaking innovations. Karma Automotive will integrate the first BMW components into its plug-in hybrid flagship vehicle, which will re-launch in 2016. The next generation of vehicles already in development will utilize more of BMW's powertrain technology. "The Wanxiang Group is giving Karma Automotive the opportunity to bring a stunning car back to the market, and the partnership with BMW and their outstanding track record is a great fit for the future," said Karma's CEO Tom Corcoran.