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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.

Looking back at 84 years of BMW roadsters

Today BMW is a top player in the luxury vehicle market, but it wasn't always so. With origins as an airplane engine builder early in the 20th Century, it broke into the automotive industry when it bought Automobilwerk Eisenach in 1928. That German manufacturer was licensed to build the Austin Seven under the name Dixi DA-1, which could be had in a roadster body style. In 1929, BMW dropped the Dixi name, and by 1936, it was building a car it designed in-house, the 326 sedan. That was followed by the company's first roadster of its own design, the swoopy two-door 327 of 1937.
XCAR picks up there, and gives a history of BMW's iconic roadsters starting with the 327, ending with today's Z4, and covering everything in between - including the beautiful post-war 507 of 1957 and the funky, plastic-bodied 1989 Z1.
The video, which we've included below, is a good history lesson and a great chance to see a bunch of classic BMWs, spanning 84 years, all driven back to back within the safe confines of a racetrack. When you have a spare 20 minutes, go ahead and take some time to watch it.

BMW M6 gets new Competition Package

With 560 horsepower on tap, the BMW M6 is already plenty powerful and capable. Those looking for an extra boost, however, may be interested in the new Competition Package. While BMW already offered a Competition Package before, the new one is even more powerful. Where the 4.4-liter twin-turbo V8 in the standard M6 produces 560 hp and the previous Competition Package boosted that to 575, the new one bumps it up to a nice round 600 – torque jumping from the standard 501 lb-ft to 516 with the new package. That means the M6 Coupe with the new package in place will now run to 62 miles per hour from a standstill in 3.9 seconds and on to 124 mph in 11.8. Top speed is electronically limited (as usual) to 155 mph, but can be derestricted to 189 if you also specify the M Driver's Package. Of course, this upgraded M6 isn't all about straightline speed: the package also includes firmer springs, dampers and anti-roll bars, as well as a retuned differential, steering and stability control. Unique 20-inch alloys and black chrome tailpipes also form part of the package that will be available for the M6 Coupe, Gran Coupe and Convertible starting in July. Before you get too excited, keep in mind this announcement is for Europe. We're standing by for information on US availability. In the meantime, check out all the details in the press release below. More potent Competition Package for BMW M6 Coupe, BMW M6 Gran Coupe and BMW M6 Convertible. Munich. In July 2015 BMW M GmbH will replace the existing Competition Package for the BMW M6 Coupe, BMW M6 Gran Coupe and BMW M6 Convertible with an upgraded version. The new Competition Package has been developed with a keen eye on enhancing driving dynamics. It includes a power boost for the 4.4-litre V8 petrol engine with M TwinPower Turbo technology (BMW M6 Coupe/BMW M6 Gran Coupe/BMW M6 Convertible: fuel consumption combined: 9.9/9.9/10.3 l/100 km [28.5/28.5/27.4 mpg imp]; CO2 emissions combined: 231/231/239 g/km)* of 29 kW/40 hp over the standard unit, to 441 kW/600 hp. Peak torque also rises, from 680 Nm (501 lb-ft) in standard tune to 700 Nm (516 lb-ft), and is available across an extremely wide rev band – between 1,500 and 6,000 rpm. New personal best for the BMW M6 Coupe: 0 – 200 km/h (124 mph) in 11.8 seconds. The three model variants impress with outstanding performance when fitted with the new optional Competition Package.