MUNICH, Germany — BMW continues to roll out M-badged performance variants of the latest 3 Series. The most recent iteration: the fourth-generation M3 Convertible, based on the new 3 Series retractable hardtop that was introduced last year.
All the usual M cues are there: telltale power bulge in the hood, front airdam with massive air intakes, flared wheel arches, contoured side sills and a rear apron with integrated diffuser.
But it's what's up front that counts, and that's a 4.0-liter V8 that makes 420 horsepower and 295 pound-feet of torque — good for 0-60-mph times of less than 5.3 seconds and a top speed electronically limited to 155 mph. That power is delivered to the rear wheels through a standard six-speed manual box and a variable M differential lock.
The M division also has developed a new seven-speed double-clutch sequential gearbox for use in all three M3 variants: sedan, coupe and convertible. Designed specifically for the 4.0 V8, the new transmission is said to enhance performance while reducing fuel consumption. It can be shifted manually via steering-wheel paddles or a floor-mounted lever. The double-clutch gearbox is fitted with a system called Drivelogic that includes 11 preset shift programs: five in automatic mode and six in manual mode.
Of course, BMW's M division beefs up the suspension and brakes on the M3 convertible and provides electronic damper control as an option, with Normal, Comfort and Sport settings. Standard 18-inch forged-alloy wheels are shod with 245/40R18 tires in front and 265/40R18s in the rear.
Dynamic stability control and cornering brake control provide an extra measure of safety, as do a full complement of airbags and such optional safety features as adaptive headlamps.
The M3's cockpit is both luxurious and functional, with leather-trimmed seats and a multifunction M steering wheel. Customers can choose from a palette of interior colors and trim, with aluminum, carbon and wood accents available.
What this means to you: As good as the M3 sedan and coupe are, the third model in the series may be the most desirable. — Paul Lienert, Correspondent
All the usual M cues are there: telltale power bulge in the hood, front airdam with massive air intakes, flared wheel arches, contoured side sills and a rear apron with integrated diffuser.
But it's what's up front that counts, and that's a 4.0-liter V8 that makes 420 horsepower and 295 pound-feet of torque — good for 0-60-mph times of less than 5.3 seconds and a top speed electronically limited to 155 mph. That power is delivered to the rear wheels through a standard six-speed manual box and a variable M differential lock.
The M division also has developed a new seven-speed double-clutch sequential gearbox for use in all three M3 variants: sedan, coupe and convertible. Designed specifically for the 4.0 V8, the new transmission is said to enhance performance while reducing fuel consumption. It can be shifted manually via steering-wheel paddles or a floor-mounted lever. The double-clutch gearbox is fitted with a system called Drivelogic that includes 11 preset shift programs: five in automatic mode and six in manual mode.
Of course, BMW's M division beefs up the suspension and brakes on the M3 convertible and provides electronic damper control as an option, with Normal, Comfort and Sport settings. Standard 18-inch forged-alloy wheels are shod with 245/40R18 tires in front and 265/40R18s in the rear.
Dynamic stability control and cornering brake control provide an extra measure of safety, as do a full complement of airbags and such optional safety features as adaptive headlamps.
The M3's cockpit is both luxurious and functional, with leather-trimmed seats and a multifunction M steering wheel. Customers can choose from a palette of interior colors and trim, with aluminum, carbon and wood accents available.
What this means to you: As good as the M3 sedan and coupe are, the third model in the series may be the most desirable. — Paul Lienert, Correspondent
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