BMW introduced the 4-series last year, a new coupe model,  following up with the M4 performance version. Now BMW fits the M4 with a retractable hard top.

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Like the M4, the M4 Convertible can be had with LED headlights and other high-tech options.

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The debut of the convertible version of the M4 comes as no surprise, as BMW followed the 4-series coupe with a convertible version.

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The retractable hard top is power-operated, and stows in the trunk.

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All the hard-top M4's performance tech, such as the 425-horsepower 3-liter engine and adaptive suspension, are available in the convertible.

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Optional adaptive suspension should help counter the weight imbalance that comes from shifting the roof around.

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The M4 comes with the latest version of iDrive, BMW's infotainment system.

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Along with the suspension, the steering, throttle, and seven-speed dual-clutch transmission all have performance settings.

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