Bmw 540i on 2040-cars

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BMW 6 Series Convertible gets a little work done for 2015

Truth be told, I've never really found the modern BMW 6 Series to be a particularly attractive car, in Coupe, Convertible, or sedan Gran Coupe forms. This current generation certainly looks a whole lot better than the Bangle-fied Six that came before it to my eyes, but on the whole, I find much of the car's design to be fussy and awkward. There's a new 6 Series on the way, scheduled to arrive sometime in 2017 or 2018, but to hold us over until then, BMW is freshening its current range, as evidenced by this convertible prototype our trusty spies recently caught testing.
Will the changes to the current 6 Series be an improvement? Perhaps. Up front, there are restyled headlamps and a new front bumper, and at the rear, BMW has redesigned the LED taillamps to bring them more in line with the rest of the company's offerings. Aside from those modest tweaks, we don't expect much more to change on the Big Six - the interior will likely carry over with some minor tweaks (or new colors), and it's possible the powertrains could be massaged gently for gains in either power, efficiency, or both.
Whether you think this new look is pretty or not, this freshened 6 Series will likely debut sometime next year, while BMW's engineers and designers craft the all-new version. See it from several angles in our gallery, above.

The List: Best of proving grounds

Proving grounds are where automakers and enthusiasts alike go to push their vehicles to their mechanical limits. The Rubicon Trail, located in the Sierra Nevada, is the ultimate off-road test, while Germany's Nurburgring is a grueling 13 mile road and track course. Jessi and Patrick visit both iconic proving grounds in this "best of" compilation of The List. If you like what you see, stay tuned to watch the full episodes, or click here to go directly to our episode archive and pick out some of your own favorite moments of The List to revisit. The List #0004: Conquer the Rubicon Trail The List #0073: Drive the Nurburgring Have an RSS feed? Click here to add The List. Click here to subscribe to The List in iTunes. Click here to learn more about our hosts, Jessi and Patrick. BMW Jeep Off-Road Vehicles Racing Vehicles The List Videos Original Video

2013 Dinan S3 BMW 550i

Steve Dinan has been enhancing BMW models since 1979. But don't throw his company into the ring with the dozen or so other tuners who tweak, tinker and piggyback upgrades on the famed German marque. Dinan is a tuner, but it's also an engineering firm that writes its own software, builds its own parts and then backs everything it does with a factory-grade warranty. That sort of fastidiousness comes at a price, but most of its customers - including the powerhouse of BMW Motorsport - rely on Dinan to help them come out on top.
In stock form, BMW's 550i is a formidable four-door with a twin-turbocharged 4.4-liter V8 rated at 400 horsepower and 450 pound-feet of torque. While those figures allow it to run with quick company (0-60 in 5.0 seconds, according to the automaker), Dinan puts the sedan's kettle on full boil with its S3 package. Starting with the engine, the performance engineering firm bolts on larger turbochargers, air-to-water intercoolers, a trick strut tower brace cold air intake, a quad-pipe free flow exhaust and its own engine management software. Pump in some premium fuel, and the result is 542 horsepower and 587 pound-feet of torque. Power is sent through the stock eight-speed automatic to a limited slip rear differential (Dinan will upgrade xDrive all-wheel drive models, too).
The Dinan S3 also features and extensive suspension upgrade that includes new front camber arms and low compliance rear control arms (engineered to reduce understeer and improve turn-in). The stock dampers are retained, but new bump stops are installed along with new springs. Overall, the car rides about a half-inch lower than stock to improve roll rate. To reduce unsprung weight, forged 20-inch HRE Performance wheels are fitted at all four corners (wearing Michelin Pilot Super Sport tires - 275/35ZR20 up front and 295/35ZR20 in the rear). Lastly, the company remaps the factory Electronic Damper Control (EDC) software with its own Dinan Shockware to work in conjunction with the new enhancements.