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BMW reveals M4 safety car with innovating water injection system [w/video]

Racing series don't just pick their safety cars at random, or use just whatever car is lying around. These days the car that sets the pace at the front of the pack is typically provided through consideration by a sponsor. In the MotoGP series, that's BMW and its M division, which have served up the Official Car of MotoGP since 1999. What you're looking at is the latest, and it packs some innovative technology on board. Aside from the matte black wrap with BMW's iconic striped livery, upgraded aero kit, retrofitted interior and emergency equipment, this BMW M4 coupe packs a new injection system under the hood. Only instead of injecting fuel, it injects water into the combustion chamber – something that wouldn't usually be recommended, but BMW insists actually aids in the combustion process. The idea is that the temperature of the air being mixed with the fuel inside the engine is usually hotter than ideal, so the system injects a fine mist of water into the collector in order to reduce the air's temperature... sort of like one of those hydrating misters at an amusement park or outdoor mall, but in an even hotter environment. The system brings the temperature of the air down to a more optimal temperature, helping it combust better. The process is said to yield a number of positive effects. For one, it reduces knocking. For another, it can make more out of lower-octane fuel where higher octane isn't available. It also can control the adverse effects of higher ambient temperature on the combustion process. But most of all, it increases output and reduce fuel consumption by around eight percent. Whether that eight percent is worth the added weight of the system – particularly with water pump and a 1.3-gallon tank in the trunk – is up for debate. But we'd imagine that the Bavarian engineers have weighed very carefully. Of course there's also the matter of refilling the water tank, which BMW says would be carried out whenever the safety car is refueled, but in real-world conditions would only necessitate attention once every five top-ups at the gas station. By now you might have guessed that BMW probably didn't develop this system just for the MotoGP safety car, and isn't planning on keeping it confined to the racetrack. Instead it's being tested and demonstrated on the safety car before being rolled out on production models in the future.

BMW M4 Concept leaked ahead of Monterey debut

Last month, we heard that BMW might be bringing a concept previewing its next M4 sports coupe to this year's Monterey festivities. Well, thanks to the folks at USA Today, we have absolute confirmation of this by way of some leaked images. And goodness, she's certainly a looker.
While a few of us still find some of the 4 Series' design to be a bit awkward, it's hard to not immediately warm up to the aggressive bits of this hotter M4 concept. It certainly looks the business of a proper sports car, and a worthy successor to the M3 coupe. Of course, a lot of this will likely be toned down for the production version, which we'll likely be seeing at the 2014 Detroit Auto Show in January, along with its four-door M3 kin.
The official M4 Concept details will be revealed later tonight, but for now, have a look at a few shots of the golden show car in our gallery of leaked shots, above.

BMW M5 spied as camouflage striptease continues

The facelifted BMW M5's striptease continues. The latest spy images of the super sedan show even more headlight and taillight details, on top of more overt signs of this car's character. Our first spy photos of the M5 showed a car with production 5 Series wheels and tiny quad exhaust pipes. The next set got sportier black wheels. But the latest shots depict a machine that gets the current M5 Competition Package's black wheels along with BMW M's trademark blue calipers, just like the current car. It also ditches the camouflage on the pillars, roof rails, and rear windows. Beyond those changes, stripping away some of the camouflage has shown modest tweaks. We're finally getting a good look at the updated, squared-off LED running lamps and the tweaked front fascia. Updates are even more minor in back. But there may be something more drastic at play with the taillights. Studying these shots, we can't really see any detailing in the rear lamps. There's a similar thing going on between the normal LEDs on the BMW M4 and the OLED units in the new M4 GTS. Backing up this speculation is a single shot of one of the rear turn signals illuminated. It doesn't look quite like the current car's signal, but we can't be certain. It's possible that the shots and the camouflage might be playing tricks on our eyes. And since this is the first time we've seen the updated M5 with production taillights, there's no real basis for comparison. Still, BMW's tantalizing new OLED tech is sure to proliferate beyond the M4 GTS. We just can't yet be certain if it's coming to the next M5. Related Video: