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BMW makes the M4 extra special with a huge wing

BMW has all of the bases covered in its lineup, especially when it comes to its 4 Series models. Don't like going to the track? There's the BMW 430i and 440i, which are available as a coupe and gran coupe. Drivers looking for a track-friendly car that can also be used on the road will be steered toward the M4. BMW even built the hardcore M4 GTS for drivers that spend all of their time on a track. Now, it looks like BMW is trying to bridge the gap between the M4 and the M4 GTS with a special-edition model. Our photographers caught BMW testing an M4 with some extreme aerodynamic components around the Nurburgring. With its aggressive front end, massive wing, and sporty rear diffuser, the prototype M4 appears to be similar to the special-edition M4 Competition Sport that BMW released in Spain. The Spain-only special edition was marketed as a softer version of the M4 GTS with less power and usable rear seats. With a similar look and visible rear seats, this prototype indicates a similar track-focused special edition model. Since the M4 is only a few years old, it's unlikely that BMW is testing a new model, but the automaker could be testing aerodynamic components for a refreshed model down the road. A cheaper, more usable M4 GTS, though, would be the perfect car to round out BMW's current lineup. Related Video:

McLaren shoehorned the F1's V12 into a BMW M5 wagon test mule

Automakers are known to utilize preexisting vehicles as test beds for major research and development purposes. But some of the zombie mashups produced in-house can result in pretty interesting combinations. Case in point, when McLaren was developing its BMW-sourced naturally-aspirated 6.1-liter V12 for the legendary F1, the company put the engine in … a BMW M5 wagon? Yup, you read that correctly. ItÂ’s no mystery that the legendary F1 came with a BMW-sourced V12. That "M70" V12 originated from its placement in the E32 7 Series and E31 8 Series “50” models in the 1980s up through the 1990s. The version that went into the F1, however, is more closely related to the M-tuned "S70" V12 found in the E31 850CSI, which was the pseudo M-variant to the 8 Series that wasnÂ’t officially designated an M model. But it did feature full-fledged tuning from the M Division. On "Top Gear" presenter Chris HarrisÂ’ podcast, "Collecting Cars", Harris interviewed David Clark, the former director of McLarenÂ’s cars for both the road and motorsports between 1994 and 1998. Clark revealed that they took an E34 BMW M5 wagon and shoehorned the S70 V12 into its engine bay as the mule for testing the F1Â’s engine. Clark even said he drove the car himself as they were fine-tuning the V12Â’s engine output. YouÂ’re probably wondering, how the heck did that thing fit? But it isnÂ’t that surprising. The E34 5-Series was designed to house either the BMWÂ’s venerable straight-six or the new-at-the-time V8. And there was room enough to house the V12 as well, particularly since BMWÂ’s V12 was essentially two of its “M20” straight-sixes bolted together at the crank in a vee. When Clark was testing the S70 V12 in the wagon, he and his team ended up with the 627 horsepower and 479 pound-feet of torque the F1 became known for. ThatÂ’s nearly twice the power the production M5's 311 hp and 266 lb-ft at the time. Clark also divulged that the actual prototype mule still exists, but itÂ’s in BMWÂ’s secret collection of prototypes, and itÂ’s never been revealed to the public. He does, however, hope that one day, BMW will open its doors and show off the incredible mashup of an automobile. Until then, youÂ’ll have to rely on the few custom engine swaps done by owners to get a taste of what a V12-powered E34 M5 is like. Rumor also has it that McLaren could be working on a new direct F1 successor with help once again from Gordon Murray.

MotorWeek fondly remembers the 2000 BMW M5

The Retro Review series from MotorWeek tends to reminisce about vehicles at are at least 20 years old and often from even further back. However, the show's latest recollection shines the spotlight on a fondly remembered sports sedan that's also a modern classic: the 2000 BMW M5. Years before BMW committed to downsized engines with turbocharging and shortly prior to the introduction of iDrive, the E39 M5 showed the Bavarian brand's engineering talents at their very best. By modern standards, the sedan's powertrain is almost antiquated. Up front, there's a big, naturally aspirated V8 that sends power to the rear wheels, and the only choice of transmission is a six-speed manual. But as MotorWeek explains, the tuning of the whole vehicle comes out to near perfection. This is a model that's definitely worth remembering.