by Tony West and Sommer Thornton
BMW releases its drop top version of the M4 coupe this fall. The very successful M4 has seen stuntastic sales for 2013. Naturally the M4 Convertible left tongues wagging at this year’s New York International Auto Show.
The race-inspired M4 drop top has optional twin LED headlights that accent the sport logo tattooed outside and the in, including on the double-spoke wheels. The longer M4 Convertible’s exterior design has a lot of sexy aerodynamic features like the three large front air intakes and the cool new M gills with air breathers. Front air curtains also direct airflow around the wheels.
The 2014 M4 Convertible weighs only about 4,000 lbs, dropping 90 lbs with the instruction of aluminum components and Carbon Fiber Reinforced Plastic (CFRP). Aluminum was used to construct the chassis, the front fenders, and the power dome hood. The drive shaft and the engine’s strut brace are composed of CFRP. Thanks to lightweight elements the M4 Convertible offers enhanced rigidity and supreme handling. The M4 Convertible’s lightweight design with its aerodynamic flair also enhances its class leading performance.
The M4 drop top features a 3 liter M4 Twin Power turbo V8 with a 0-60 mph time of only 4.4 seconds with the automatic transmission, and 4.2 seconds with the manual. The new M4 Convertible has a 40% torque increase to boast 406 lb-ft and 425 horsepower. An optional Launch Control Function allows for maximum torque to be delivered from a standing stop. The new M4 Convertible’s twin power engine has Valvetronic variable valve timing and double VANOS continuously variable camshaft timing along with High Precision Direct Injection. All three features work in tandem for smooth power delivery, prompt responses, and fuel savings. [divider]
[divider]The M4 Convertible’s V8 engine has the available 6 speed manual gearbox or the 7 speed double clutch transmission. With the 7 speed DCT, drivers can switch gears with the selector in the center console, or with steering wheel mounted paddle shifters. The 7-speed transmission ménages with two gearboxes- each with its own clutch, to allow for seamless gear changes and no jerky-shifty.
The BMW M4 Convertible has a thrilling max output of 7,600 rpm and a top speed of 155 mph. Peak torque is achieved between 1,850 and 5,500 rpm. And electromechanical steering enhances fluid steering. Servotronic electronically adjusts steering to the given speed. And the steering system can be set to Comfort, Sport, or Sport+ modes. Adaptive M Suspension also has Comfort, Sport, and Sport+ modes. M compound brakes are standard on the M4 Convertible and carbon ceramic brakes with gold-painted calipers are available.
The 3-piece hard-top of the BMW M4 Convertible takes about 20 seconds to lower at speeds less than 11 mph. The redesigned hard top features noise reducing materials along with a sound-absorbing headliner. The windblock is lighter and easy to store behind the rear seat. The new electro-hydraulic loading assistance system properly positions the hardtop in the trunk for maximum space. With the top folded, the trunk has 7.8 cu.ft. of storage and 13 cu.ft with the hard top up.
The leather trimmed cockpit of the M4 Convertible is decked out with contrast stitching, chrome accents, and the M sport logo tattooed on the buckets seats, steering wheel, gearshift, and the door sills. Optional neck warmers add comfort when driving with the top down. Optional technology for safety and comfort include 3D navigation, Active Driving Assistant, and the very cool Heads Up Display, that will project standard info onto the windshield, but also can project the gear and shift indicator and the rev counter. The 2014 BMW M4 Convertible will be on sale in the US this fall starting at $84,000.