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2014 BMW X5 configurator goes live

BMW won't begin selling the 2014 X5 for another few months, but the German manufacturer has brought the third-generation SAV's configurator online, allowing interested customers to poke around and look at the X5's optional goodies.
Like the 3 Series, the X5 is available in a number of lines that load up extras automatically. There's also a do-it-yourself truck that allows owners to pick and choose if they're not enamored with the styling or trim of one of the dedicated packages. As usual, the options list is quite vast, regardless of which line is chosen. We were able to easily take the new, rear-drive X5 sDrive35i, which started at $52,800, and bring the total price up past $80,000.
The new X5 carries over its 4.4-liter, twin-turbo V8 from the current model, as well as BMW's excellent 3.0-liter, turbocharged inline-six. The X5 xDrive35d, with the 3.0-liter turbodiesel will also be available on the third-generation SUV, but won't hit dealers until early 2014. BMW is stepping outside of the X5's usual bounds, offering a dedicated rear-drive model, available with all the same trimmings as the xDrive vehicles. Head over to BMW's US consumer page and have a go.

BMW Vision Gran Turismo takes M235i Racing to the virtual extreme [w/videos]

Late last year, Mercedes-AMG worked up a concept car called the Vision Gran Turismo. It presented it at the Los Angeles Auto Show, but that wasn't the point: the point was that it would feature in Gran Turismo 6 on the PlayStation 3. It wasn't the first concept created specifically for the popular driving simulator - following similar projects by Citroën and Red Bull Racing - and as we reported just a month later, it wouldn't be the last. What we have here is the next.
Looking like an even more extreme version of the M235i Racing, the BMW Vision Gran Turismo concept builds on "the tradition of the successful BMW touring cars of the 1970s" in a heart-pumping, if unfortunately strictly virtual form. It's got more extreme aero than the aforementioned M235i Racing and a striking take on the M division's signature light blue, dark blue and red stripe over white livery.
Underneath the digital bonnet sits the same 3.0-liter inline six as the M235i, but pumping out a prodigious (if theoretical) 549 horsepower - far more than the 333 hp in the actual Racing version or the 320 hp in the roadgoing model. Of course BMW has given it an ideal 50:50 front-rear weight distribution and a curb weight of 2,600 lbs - nearly a thousand pounds less than the roadgoing M235i.

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.