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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.)

BMW i3s traction control tech going in all BMW, Mini cars

The BMW i3s is essentially a warmed-up version of the i3 electric car we all know and love. The performance boost isn't huge — just 14 horsepower and 15 pound-feet of torque — but it also gets a new suspension, wheels and tires as well as an improved traction control system. We found the car to benefit from all the updates when we drove it for our First Drive Review, but now BMW has offered up more details on just how the traction control system of the i3s helps make it better to drive. The company says it'll expand the technology to all future BMW and Mini models as well. The i3s's system is calibrated to help it to pull away quickly from a stop, making full use of the instantaneous torque offered by the electric motor. It also improves stability when accelerating out of corners, when using regenerative braking and, of course, when the road conditions are less than ideal. The results are palpable, and with the other improvements the i3s definitely feels stronger off the line, as we found on our drive. It's also about a half-second quicker to 60 miles per hour, at 6.8 seconds. The secret is in the response time of the stability control, which BMW claims is 50 times faster than the conventional system. This is made possible by moving the control process into the powertrain itself, rather than a remote unit. This reduces the signal path and, thus, the response time of the traction control system. BMW's Head of Chassis Development, Peter Langen, said of it, "With their high levels of torque and instantaneous responses to every movement of the accelerator, electric motors already make significantly higher demands on driving stability systems than conventional power units." While engineered to make the most of the electric motor, BMW says the shorter cycles of this traction control system show promise for internal combustion vehicles as well. As such, we'll begin to see the improved technology applied across the BMW and Mini lineups going forward. Related Video:

BMW brings first diesel 7 Series to US with $82,500* 740Ld xDrive

After almost 40 years on the market, there are probably few things the BMW 7 Series hasn't offered, but when it comes to the US market, one of those things just happens to be a diesel engine. That is all about to change, however, as BMW announced that it will unveil the 2014 740Ld xDrive at the Chicago Auto Show before sales commence later in the spring.
Offered only on long-wheelbase models with standard all-wheel drive, the new diesel 7 is powered by BMW's 3.0-liter inline-six producing 255 horsepower and a stout 413 pound-feet of torque peaking between 1,500 and 3,000 rpm. While BMW has yet to release any type of fuel economy figures, it did say that its diesel technology is usually good for an improvement of 25 to 30 percent over the gas models - just for fun, that means that the 740 Ld xDrive could get as much as 24.7 miles per gallon in the city and 36.4 mpg on the highway, but that's just doing the math and there is nothing official behind those numbers. Acceleration will take a little longer than in the 740Li xDrive (shown above) with BMW stating 6.1 seconds from 0-60 compared to 5.4 seconds for the gas model.
Another small increase over the gas version will be in price, with the 740Ld xDrive getting a starting MSRP of $82,500 (*not including $925 for destination), which is just a $1,500 bump over the 740Li xDrive. For comparison, the Audi A8L TDI starts at $78,800, while the previous-gen Mercedes S350 Bluetec was priced at $93,000. Scroll down for more info on the new diesel-powered 7 Series, and stay tuned to our live coverage from Chicago in a couple weeks as we'll have live images and hopefully more info.