Making its first public appearance in New York, the all-new 2015 BMW M4 Convertible is the al fresco alternative to the equally new coupe version that debuted last January in Detroit. Save for offering a wind-in-the-hair motoring experience, the two are design clones, which guarantees this hard-core cabrio will have no problem living up to BMW's Ultimate Driving Machine legacy. 

Building on a pedigree of performance 

Like its 2015 BMW M4 Coupe counterpart, the new convertible packs a 425-horsepower/3.0-liter twin-turbocharged inline-6 engine that cranks out 406 lb-ft of peak torque. More potent and more fuel efficient than the naturally aspirated V8 used in the previous M3 Convertible, this new TwinPower Turbo unit is backed by either a standard 6-speed manual transmission or optional 7-speed M Double Clutch Transmission with a Launch Control function. Top speed is limited to 155 mph with either trans, but the 0-60 mph sprint requires 4.4 seconds with the manual and 4.2 ticks with the auto. While roughly 0.3 seconds slower to that benchmark than an M4 Coupe, those stats mean this new drop-top is still blisteringly quick.

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Mechanically, the M4 Convertible also ticks all of the other high-performance boxes as its coupe sibling. A full M suspension, Active M Differential, multi-mode Servotronic steering and upgraded brakes are all standard with Adaptive M suspension and M carbon ceramic binders on offer as options. Weight-saving efforts include aluminum body panels, a CFRP (Carbon Fiber Reinforced Plastic) driveshaft and front strut tower brace cut curb weight to 4,055 pounds - about 90 less that its predecessor. 

Styled for speed 

The visual parallels continue on the exterior of the new M4 Convertible. It sports a bolder front end with aero-enhancing M gills, Air Breathers and Air Curtains set off by flared fenders and an edgier tail that has a subtle decklid spoiler and a functional diffuser housing dual-paired exhaust outlets. The new M4 Convertible has a three-piece power retractable hard top capable of cycling in 20 seconds and at speeds of up to 11 mph. This new one-touch lid is better able to block out ambient noise when raised and gives more usable trunk space (13.0 cu ft) than the outgoing M3 cabrio.

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Like the new M4 Coupe, the 2015 BMW M4 Convertible will arrive in showrooms this summer. Pricing will be announced at the car's actual reveal in New York.

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