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2015 BMW M4 Convertible Drops its Top in Advance of New York Debut

2015 BMW M4 Convertible Drops its Top in Advance of New York Debut

By Jeff Youngs,
Feeling the wind in your hair just got easier, thanks to the official announcement by BMW that it will debut the new M4 Convertible at the 2014 New York Auto Show. Not surprisingly, the 2015 BMW M4 Convertible offers the same performance upgrades as the M4 Coupe on which it is based, the primary differences amounting to a power-retractable hardtop and related features.

That means the new M4 Convertible is equipped with a turbocharged, 3.0-liter 6-cylinder engine generating 425 horsepower between 5,500 rpm and 7,300 rpm, and 406 lb.-ft. torque between 1,850 rpm and 5,500 rpm. Maximum engine speed measures a lofty 7,600 rpm.

A 6-speed manual gearbox is standard equipment, powering the car's rear wheels and accelerating the M4 Convertible to 4.4 seconds, according to BMW. A 7-speed M Double Clutch Transmission with paddle shifters is optional, and produces quicker acceleration to 60 mph, arriving at that velocity in 4.2 seconds by BMW's count. Launch Control is standard, and BMW employs a carbon fiber-reinforced plastic (CFRP) driveshaft to reduce weight and rotating mass for improved powertrain response. Top speed is a governed 155 mph.

Additional hardware upgrades include a CFRP front strut tower brace, Active M Differential, M compound brakes, and electric steering with Comfort, Sport, and Sport+ settings. The optional Adaptive M suspension offers the driver the same choices as the steering, and buyers can opt for carbon ceramic brakes with gold-painted calipers. BMW says the M4 Convertible is 90 lbs. lighter than the previous M3 Convertible, but it still weighs more than 2 tons.

To make sure nobody mistakes the M4 for anything but, BMW has revised the front styling with large air intakes to cool the engine and brakes, installed black grille bars, added a power dome hood, redesigned the functional side gills, and employed twin-stalk side mirror mounts. A set of M double-spoke aluminum wheels is standard equipment, while LED headlights are optional.

Inside, 4-passenger seating with perforated leather and M-specific trim are standard. The power-adjustable and heated M sport seats have single-piece seatbacks, and neck warmers make top-down driving on a chilly day a more palatable proposition. The M4 Convertible's power-retractable hardtop is designed to reduce wind noise compared with the previous M3. It can be dropped while the car is traveling at speeds up to 11 mph and includes a standard windblocker that can be stored behind the rear seats when not in use.

According to BMW, the M4 Convertible's trunk is larger than the old M3's, and both a center pass-through and folding rear seatbacks allow for expansion of the space. Fold the roof down and the trunk loses 40% of its total volume.

BMW expects to get the new 2015 M4 Convertible into showrooms during the summer of 2014. Pricing will be announced closer to that time.

Additional Research:

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