BMW BMW 128i CONVERTIBLE PREM, page #40

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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.

2015 BMW M4 Convertible Quick Spin [w/video]

Quite a while ago, we ran a story where our editors disclosed their guilty pleasure cars. There, I admitted my love for the ultra-comfortable Acura RLX. But I have another automotive guilty pleasure, and it's the BMW M4 Convertible, and the droptop M3 that came before it, as well. Whether it's an E46, E93, or the new F83 M4 model, I just love the idea of a droptop M car. It kind of goes back to my Lexus RC F review, where I posit that most consumers buy a car like this solely for the image. To the point of this car, if you're opting for a convertible, you're boldly throwing out any pretense that you bought this car for its performance. It's a different and far grander indulgence than something like a droptop Ford Mustang, Chevrolet Camaro, or even a Corvette, and that's especially the case with the new M4, as I found out after a week at the wheel. Driving Notes Anyone that's listened to me on the Autoblog Podcast knows I've been none too kind about the state of BMW's turbocharged M cars. In effect, they're too easy to drive. In older models, the narrow power band meant you needed to always keep an eye on the tach, lest you fall into a weak zone. But because today's turbocharged M engines are so damn torquey, you can simply mash the throttle, regardless of engine speed or gear, and zoom forward. That's mostly the case here, although with a 7,500-rpm redline, the M4 at least maintains the illusion that you have to keep the revs up. Power delivery is fast and immediate, capable of catapulting the M4 towards the horizon at even half throttle. But more than the brutal power delivery, this latest M entertains with a strange but familiar singing voice. It's an almost feral, straight-six howl, particularly high in the rev range. But because of the single-scroll turbochargers and today's sound-tuning sorcery, the noise here is far richer and complex than what you'd get in a naturally aspirated M car, like the old E46. The turbos hiss and spit, and wide-open-throttle upshifts come with a cackling snap from the quad-tipped exhaust. Despite my belief that M cars' manual transmissions are generally pretty lousy these days, the M4's gearbox is far better than what you'll find in an M5. The clutch is more forgiving than in the larger sedan, too. With a broad catchpoint and a linear action, it feels natural and intuitive to work.

The Aficionauto gets his hands on Back To The Future BMW

When thinking about the cars of Back to the Future, Doc Brown's iconic DeLorean is surely the first one that jumps to mind. However, the latest video from The Aficionauto tracks down a more obscure but still rather cool vehicle from the series. Host Christopher Rutkowski heads to Connecticut for a difficult drive in Griff's screen-used 1976 BMW 633 CSI from the second film in the trilogy. Owner Jeff Chabotte bought the car in thoroughly neglected condition and spent weeks with his father and son bringing the futuristic Bimmer back to life. The slew of scoops and nacelles behind the seats might not be aesthetically beautiful, but they're authentic to the appearance in the film. For authenticity, Chabotte even keeps the busted taillight from Griff hitting it in the movie. As Rutkowski finds during his drive, Griff's BMW poses absolutely no threat of chasing down the DeLorean to 88 miles per hour. There's actually a pretty good reason for that, though. The interesting story involves how the producers procured this gray-market 633 CSI to be in Back to the Future II. Related Video:

2015 BMW i8 Beauty-Roll

For those of you paying attention, we've really ramped up the old Autoblog video game these days. Our new series Car Club USA joins Translogic and The List, and there are more Daily Drivers and Short Cuts than ever. But sometimes, all you care about is the car. The Autoblog Beauty-Roll video series has one goal: bring you glossy video images of cars, and nothing but. We're collecting moving pictures of all the cars we test, inside and out. Each episode comes with a hit of engine sound – start-up and with a few revs – to round out the package. Set your resolution to max, kick it into full-screen, turn up the sound, and enjoy today's subject, the 2015 BMW i8. Oh, and if you'd like more Beauty-Roll, click here to see the back catalog.

BMW Motorad reveals Concept Stunt G 310 in Brazil

BMW has been on a bit of a concept motorcycle bent lately, and each has taken a decidedly different approach from one another. The Motorad division did the Path 22 scrambler concept in June, the Concept 101 custom bagger in May, the Concept Roadster last year, and the Concept 90 retro racer the year before. Now it's at it again with the Concept Stunt G 310. As you might have guessed, the G 310 is a stunt bike. Its compact form is built around a single-cylinder engine canted rearwards with a rotated cylinder head to help optimize the weight balance. The intake was moved forward and the exhaust towards the rear, mounted under the seat, to enable the rider's freedom of movement. It has long travel in the suspension, but still rides on a short wheelbase – perfect for impressing the crowds. To that end, it was designed with collaboration from four-time stunt riding champion Chris Pfeiffer. It's also got a lockable throttle so the rider can take his hands off the controls (not advisable for the rest of us). The beefed-up secondary rear brake can be actuated by a squeeze of the finger. Axle pegs allow for additional foot-placement options, red crash bars protect the mechanical elements, and a specially designed "stunt tail" is milled from solid aluminum and provides an additional foot-hold. The shape is adorned with an eye-catching neon livery designed to give the impression of movement, even when it's sitting still. The bike will be unveiled in Sao Paulo, Brazil, at South America's preeminent motorcycle show. BMW Concept Stunt G 310 – Street. Style. Stunt. 06.10.2015 Munich/Sao Paulo. With the world premiere of the BMW Concept Stunt G 310 at South America's largest motorcycle show, BMW Motorrad is presenting a completely new side: the uncompromising interpretation of an aggressive and agile stunt bike based on a single cylinder study. Thanks to his experience as a four-times World and European stunt riding champion, Chris Pfeiffer, contributed to the realisation of the BMW Concept Stunt 310. "Stunt riding is a demanding and multi-faceted sport. Ideally you need a compact, agile bike which is also stable and robust at the same time. You have to achieve the ideal balance between aggressiveness and control", explains Chris Pfeiffer. Compact proportions, highest-level agility.

2016 BMW M4 GTS: More power, less weight, ready for the track

BMW calls its new M4 GTS the "most agile, radical, and powerful M4 ever." It's got 493 horsepower, a slick new water injection system, a three-way adjustable coilover suspension, and a weight reduction of roughly 200 pounds compared to a stock M4. Only 700 will be built, with 300 allocated for the United States. And did we mention it looks absolutely killer? Let's talk about that water injection system for a moment, because it's the first time this technology is being used on [an intercooled - Ed.] production road car. Basically, water absorbs heat from surrounding air, so a fine mist is sprayed into the intake manifold where it evaporates, lowering the temperature of the intake air. BMW says this reduces final compression temperature, allowing the turbochargers to operate with increased boost pressure and better spark timing. The end result is increased output – 493 horsepower and 442 pound-feet of torque from the same twin-turbo, 3.0-liter straight-six as the standard M4. That's an increase of 68 hp and 36 lb-ft. But the GTS isn't just about increased power. In fact, the bigger story is its weight reduction. BMW incorporated the use of aluminum and carbon fiber throughout the M4's construction, and DIN curb weight is listed as 3,329 pounds. It's unclear if that's the exact US measurement, and BMW couldn't comment on that as of this writing, but compared to our 3,530-pound stock M4, that represents some 200 fewer pounds of heft. Carbon fiber reinforced plastic (CFRP) is used in the hood, making that part some 25 percent lighter than the stock piece. CFRP is also used for the driveshaft, making it 40-percent lighter than the standard setup. Even inside the car, the new center console is 30-percent lighter than what you'd find in a normal M4. The rear seats are gone, and we're sorry to say that the cool racing buckets pictured here won't be available in the US. Making this thing super capable at the track is a three-way M coilover suspension, combined with upgraded carbon ceramic brakes, set behind staggered wheels and tires. Up front, the GTS rides on 19-inch rollers wrapped in 265/35-series Michelin Pilot Sport Cup 2 tires, and out back, 20-inch wheels are fitted inside 285/30-series rubber. The only transmission available is the seven-speed, M DCT dual-clutch unit, and when all is said in done, BMW says the M4 GTS will run the infamous Nurburgring Nordschleife in 7 minutes and 28 seconds. Another cool feature: organic LED technology.

BMW's DriveNow car sharing shutting down in SF next month

BMW's DriveNow car-sharing service is suspending operations in San Francisco next month after more than three years. The culprit? Not enough parking spots in the City. BMW debuted both DriveNow car-sharing and its ParkNow service in the City by the Bay in August 2012, initially launching with the ActiveE plug-in vehicle and later moving over to the i3. While there probably wasn't a shortage of folks looking to drive those cars, it was the ending part of that equation that proved problematic. That's because San Francisco hasn't been able to clear out enough street-parking spots to make the program work properly, despite adding 80 spaces for the 150 cars in the program back in 2014. "We hope to return to San Francisco in the future and will continue to engage with the City on possible solutions that will allow you to experience the full benefits of our one-way car sharing service," said DriveNow CEO Richard Sternberg on the company's website. "In the meantime, we are focusing our efforts on new cities where our transportation solution can flourish. We would like to thank you for your loyal support and embracing flexible car sharing as an alternative transportation method." As far as that expansion to other US cities, BMW hasn't been specific. Bimmer also runs the DriveNow program in three Germany cities as well as Copenhagen, Vienna and London. So, DriveNow apparently has an easier time finding parking spots in London than in San Francisco. Why BMW couldn't use a flexible parking system for its one-way rentals like the similar Car2go program uses remains a mystery. Related Gallery BMW i3 Available Through DriveNow In Germany View 17 Photos News Source: DriveNow via BMW BlogImage Credit: DriveNow/Facebook Green BMW California parking drivenow

BMW reveals X4 M40i performance crossover

The first details and images of the new BMW X4 M40i leaked out Tuesday, and now the Bavarian automaker has released all of the information on its new performance crossover. The latest model in BMW's M Performance line offers an array of upgrades over the existing X4, and they start under the hood. That's where Munich fitted a new 3.0-liter turbocharged inline six based on the one found in the X4 xDrive35i (whose place this model takes at the top of the X4 lineup). The engine is tuned to deliver 355 horsepower and 343 pound-feet of torque. In addition to the twin-scroll turbocharger, the engine also boasts variable cams and valves, as well as a high-precision injection system. This translates to a 0-60 time of 4.7 seconds – a figure which BMW cites as "best-in-class." Power is channeled to all four corners through an eight-speed automatic transmission and a re-calibrated xDrive system that's biased to the rear wheels. Naturally the suspension has been upgraded as well, with increased camber, stiffer springs, reinforced stabilizers front and rear, and active dampers. The steering rack has also been retuned. You'll be able to tell the M40i model from lesser X4s by its enhanced appearance. Though the aero kit looks largely the same as the stock version, BMW has fitted the M Performance model with metallic accents, 19- (or available 20-) inch alloys wearing Michelin Pilot Super Sport rubber, and a variable sport exhaust. Inside, it's also upgraded with a unique steering wheel, shifter, sports seats, and specific badging. This adds up to a crossover that may not be a full-on M model, but promises up the performance quotient significantly over the rest of the X4 line. THE NEW BMW X4 M40i - World premiere of the new inline 6 cylinder TwinPower Turbo engine. - Intelligent BMW xDrive: four-wheel drive with rear-wheel-drive characteristics. - A sporty chassis specifically tuned to M Performance specifications. Woodcliff Lake, N.J.- September 30, 2015... Today, with the introduction of the new BMW X4 M40i, the successful BMW X4 has gained a new top model. In the Sports Activity Coupe segment (SAC), the BMW X4 M40i is setting new standards with enhanced driving dynamics and best-in-segment acceleration. The new BMW X4 M40i will be available at dealers starting February 2016. Design. The exterior of the new BMW X4 M40i makes it stand out as a clear member of the BMW M Performance family.

1971 BMW 2002 is a car designer's car

Choosing what car to buy, drive, and love is a difficult decision for anyone. But when you're a car designer, the decision carries that much more weight. Then again, it may be that much easier when your whole decision comes down to the visceral and the aesthetic. Take Radu Muntean, for example, who's profiled in this episode of Petrolicious. Not to be confused with the film director of the same name (and nationality), this Radu Muntean is a car designer by trade. Since moving from his native Romania and graduating from the Art Center College of Design in Pasadena, Radu went on to work for the likes of Ford, GM, and Tesla. But his pride and joy is a set of wheels he didn't design himself: it's a 1971 BMW 2002. It's a model that BMW made for the long stretch of time in the 1960s and '70s, and enjoys a cult following to this day. And it's not hard to see why. Radu has customized his vintage Bimmer extensively, but rather than glitzing it up, he's boiled it down to its essence. And like a Lancia Fulvia or Alfa Romeo Giulia of the same era, this 2002 is a thing of simple beauty: squared-off design, slap sides, tall greenhouse, and little more. Related Video:

BMW X4 M40i leaks ahead of LA Auto Show

Leaked photos of the higher-performance BMW X4 M40i emerged today ahead of its expected debut at the 2015 LA Auto Show. The new model builds on the xDrive35i model, offering an extra 60 horsepower and 43 pound-feet of torque. The hotted-up X4 should use that power well. According to Auto Guide, it will hit 62 miles per hour in 4.9 seconds and should be limited to a top speed of 155 mph – a notable improvement over the existing xDrive35i, which takes 5.2 seconds to hit 60 and has a top speed of 130 mph. Expect the X4 M40i to be followed by an similar version using the X3's more versatile body style, both of which will use an eight-speed automatic and a more aggressive all-wheel-drive setup. Despite the "M" in its name, this is not a full-blown M car. Instead, it takes the same tack BMW has used for the M235i here in America, as well as the M50d models sold in Europe: higher performance over stock, without offering the full enchilada that is a proper M car. That explains the slightly more aggressive body kit, which isn't as sporting as that of a proper M car. On top of the new front and rear clips, there's a set of meaty 19-inch wheels that look to be wrapped in sporty Michelin Pilot Super Sport tires. In the cabin, an oversized M-branded steering wheel is the most notable addition. Naturally, we'll have the full range of details on the X4 M40i when it debuts in a couple of months in LA. Related Video: The video meant to be presented here is no longer available. Sorry for the inconvenience.