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Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

The BMW M760i xDrive isn't as cool as the Alpina B7

Earlier this week, BMW released what we assumed was the new pinnacle of the 7 Series range: the Alpina B7 xDrive. But then we received information about the car you see here, which still isn't a full M7, but uses the name M760i xDrive. What we're trying to figure out is, why would you get the M760i over the brand-new Alpina? Mechanically, and as far as we can tell, the only real difference between the two cars is under the hood. The M760i uses a twin-turbo 6.6-liter V12 capable of an estimated 600 horsepower at 5,500 rpm and 590 pound-feet of torque at 1,500 rpm. Thing is, the Alpina B7 also makes 600 hp and 590 lb-ft, albeit at higher points in the rev range, from a twin-turbo 4.4-liter V8. Both cars use all-wheel drive. Both cars have eight-speed automatic transmissions. But while the M760i does the 0-62 run in 3.9 seconds and tops out at an electronically limited 155 miles per hour, the Alpina does 0-60 in 3.6 seconds and runs to an unrestricted 193 mph. For all intents and purposes, the little details about interior refinement and technology are basically the same. It's a top-of-the-line 7 Series, so no matter if you're doing Alpina or M760i, you're getting the best of the best. To us, though, the Alpina represents a package that's more unique. It's certainly a bit flashier, what with its Alpina-correct 21-inch wheels, blue paint, and body kit. But put the two cars next to each other on the street and ask an unknowing pedestrian which one is top dog, and we're willing to bet they'll say Alpina every time. There's no word on pricing for either version of the 7 Series, but we expect they'll be close. The M760's engine will be more expensive, but all those Alpina upgrades certainly won't come cheap. We'll know more closer to the launch of both later this year and in early 2017. For now, read more about the M760i in the press blast below. Related Video: The All-New 2017 BMW M760i xDrive. - Superb performance and exceptional luxury combined. - The allure of the most powerful BMW V12 production engine. - First BMW 7 Series M Performance Automobile. Today, BMW announced the all-new BMW M760i xDrive, the latest addition to the BMW M Performance line-up. With the introduction of the 2017 BMW M760i xDrive, the sixth generation BMW 7 Series adds the first M Performance TwinPower Turbo 12-cylinder to its offerings.

BMW reveals new X5 Security Plus in Moscow

A major player in the Russian market, BMW is heading to the Moscow Motor Show this month with a slew of local debuts... most of which we've already seen. But among all the new models making the trek from Bavaria to Moscow will be the new X5 Security Plus.
In a new-model launch that will surprise exactly no one, BMW's latest armored vehicle upgrades the X5 with enhanced protection for oligarchs against Chechen rebels, AK47-touting gangsters and missiles randomly falling on Crimean highways. Now meeting the VR6 standard of ballistic protection, the new X5 Security Plus incorporates reinforced bodywork, seats and joints, along with bulletproof glass.
Of course all that reinforcement (not to mention the jars of beluga caviar and bottles of Stoli in the glovebox) will come with a weight penalty, but the 4.4-liter twin-turbo V8 ought to do the trick, driving 450 horsepower through BMW's xDrive all-wheel-drive system to get the vehicle's occupants out of a war zone in a hurry.