2013 Bmw M5 With Driver Assitance Pkg And Executive Pkg With Manual Transmission on 2040-cars

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BMW 4 Series Convertible basks in the sun

The BMW 4 Series Convertible will show its non-camouflaged face sometime later this year, but our spies recently caught this nearly naked prototype out getting some sun. As you'll recall, the droptop 4 Series replaces the 3 Series Convertible in the BMW range, and if our recent stint behind the wheel of the new 435i Coupe is anything to go on, this topless 4er should be quite a fun runabout for sun-drenched motoring.
To no one's surprise, the 4 Series Convertible shares all of its design with the 4 Series coupe, save, of course, the obvious roofectomy. Beyond that, the topless 2+2 will use the same engines and transmissions as the coupe, meaning it should arrive in the US in both 428i and 435i guises, powered by a 2.0-liter turbocharged inline-four and 3.0-liter turbocharged inline-six, respectively. Both six-speed manual and eight-speed automatic transmissions will be available.
The car spied this time around has the full M Sport visual treatment, with the revised (and better-looking) front fascia, larger 19-inch wheels, and attractive Melbourne Red paint. Interestingly, it appears this prototype has the standard xenon headlamp setup, rather than the full-LED option that's also available.

BMW and Jaguar Land Rover to jointly develop electric car tech

FRANKFURT – BMW and Jaguar Land Rover on Wednesday said they will jointly develop electric motors, transmissions and power electronics, unveiling yet another industry alliance designed to lower the costs of developing electric cars. Both carmakers are under pressure to roll out zero-emission vehicles to meet stringent anti-pollution rules, but have struggled to maintain profit margins faced with the rising costs of making electric, connected and autonomous cars. "Together, we have the opportunity to cater more effectively for customer needs by shortening development time and bringing vehicles and state-of-the-art technologies more rapidly to market," said BMW board member Klaus Froehlich. BMW and Jaguar Land Rover said they will save costs through shared development, production planning and joint purchasing of electric car components. Both companies will produce electric drivetrains in their own manufacturing facilities, BMW said. The BMW Jaguar Land Rover pact comes as rivals FiatChrysler and Renault explore a $35 billion tie-up of the Italian-American and French carmaking groups. Nick Rogers, Jaguar Land Rover's engineering director said, "We've proven we can build world beating electric cars but now we need to scale the technology to support the next generation of Jaguar and Land Rover products." BMW was in talks with rival Daimler about developing electric car components but was also in discussions with Jaguar Land Rover, a company it once owned, to explore an alliance on engines. BMW already has a deal to supply an 8 cylinder engine to Jaguar Land Rover. Carmakers are increasingly open to sharing electric car parts because the technology is expensive and because customers no longer buy a car based on what engine a vehicle has. "Carmakers are much less precious about sharing electric car technology because it is much harder to create product differentiation with electric car tech. They all accelerate fast, and everybody can do quality and ride and handling," according to Carl-Peter Forster a former chief executive of Tata Motors and a former BMW executive. Jaguar Land Rover is still run by former BMW managers, including Ralf Speth the company's chief executive who spent 20 years at BMW prior to joining JLR, and Wolfgang Ziebart, the engineer who oversaw Jaguar's I-Pace electric car program, who is a former head of research and development at BMW.

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.