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Thermal imagery of BMW M4 DTM pit stop is red hot

A pit stop is a pit stop, right? The race car pulls in, the crew changes the tires, pumps in some fuel, maybe swaps out a busted body panel or squeegees the windshield, and off it goes for another heat. Only pit stops have become the focus of news lately for a number of reasons, whether it's because of mishaps (like the ones that prompted F1 to ban mid-race refueling), new time records (due largely to said ban) or interesting new ways to film the fast-paced action.
A few weeks ago we brought you footage of an IndyCar pit stop filmed from multiple angles courtesy of Google Glass. Now BMW has released a brief clip of one of its M4 DTM racers coming in for fresh rubber, all filmed by infrared camera. Its the kind of technology BMW uses to help optimize its German touring cars for competition, and now the Bavarian outfit has released some footage for fans to enjoy.
The resulting thermal imagery gives you an idea of how hot the car runs (and where the heat is emanating from), how warm they get the fresh rubber before they get it onto the car, and what kind of temperatures the pit crew is subjected to. Look closely enough in the 25-second video below and you'll even see the heat sputtering out of the exhaust pipes as the M4 downshifts into its pit box. (Just don't try adjusting your speakers, the clip is without audio.)

2014 BMW 5 Series starts at $50,425* and gets a new diesel, 5 Series GT starts at $60,925* [w/video]

BMW itself says it is making "Precise modifications to the design" of the facelifted, sixth-generation 5 Series, and this is the result. The 2014 5 Series will come in four flavors - sedan, Touring, Gran Turismo and ActiveHybrid 5 - the biggest news probably the addition of a diesel engine for the US market.
When they go on sale in August, the 528i sedan will start at $50,425, a $1,700 increase over the 2013 model, and if you want xDrive that adds $2,300 to the price across the model range. The 535d employs a 3.0-liter twin-turbo inline six-cylinder diesel with 255 horsepower and 413 pound-feet of torque and starts at $56,025. BMW portends "substantial fuel efficiency gains over its gasoline-fueled counterpart," but the exact numbers won't come until closer to the on-sale date. The $64,825, top-dog 550i holds pat with 4.4-liter, twin turbo V8, with output upped to 445 hp and 480 lb-ft - an increase of 45 hp and 30 lb-ft of torque. The outputs haven't changed on the twin-turbo four-cylinder in the 528 nor the 3.0-liter six-cylinder gasoline engine in the 535, and *all prices include the $925 destination charge. The engines are also fitted with a coasting mode that uncouples the powertrain when rolling downhill.
Outside there are new "contour lines" for the grille and air intakes, slimmer taillights and elements that accentuate the car's width - as if that were necessary. Xenon adaptive headlights will be standard along with side indicator lights on the rearview mirrors, the options list adds LED headlights, the Luxury Line and Modern Line packages. The former package adds chrome trim to certain exterior elements, the latter adds matte chrome trim.

BMW already considering four cylinders for next M3

The cylinder count in BMW's M3 has fluctuated over the years. The original M3 debuted in 1985 packing a 2.3-liter inline-four, but subsequent models went with sixes until the outgoing generation upped the cylinder count to eight. With its latest model, BMW has dropped back to six cylinders with a pair of turbos taking the place of the extra pistons. But the next M3 sedan and M4 coupe could go back to the model line's roots with a four-cylinder engine.
Speaking with BMW M product manager Carsten Pries at the launch of the latest M3 and M4 in Portugal, our Aussie compatriots at Motoring.com.au report that "you could see a future [M3] powered by a four-cylinder engine." Offsetting the reduction in cylinders, the lighter engine would benefit the vehicle's weight and balance, thus enhancing performance.
We wouldn't expect the next M3 and M4 to lose any power in the process, though: Output in the M3 has only risen over the generations, from 192 horsepower in the four-pot original to 282 hp in the six-cylinder E36, 338 hp in the six-cylinder E46, 414 hp in the V8 E90 and 425 ponies in the new turbocharged six-cylinder F80 model. With that latter model having just debuted, it'll likely be a good six or seven years before the next version comes along, giving BMW plenty of time to settle on an engine - however many cylinders and turbochargers it has. In the meantime, you'll have to forgive us for taking a romp down M3 memory lane in the fresh gallery of images above.