While the BMW M4 Coupe might be available in several configurations, the M4 Convertible stands in solitude as the most potent 4 Series Convertible available. Powered by a 3.0-liter turbocharged six-cylinder, it sends 425 horsepower - or 444 hp with the Competition Pack - to the rear wheels through a standard six-speed manual gearbox or seven-speed dual-clutch automatic. Riding on 18-inch wheels and with LED headlights and M-specific styling, the M4 Convertible is only differentiated from its closed-roof sibling by a power-folding hardtop roof. Inside, leather upholstery adorns the heated 14-way adjustable power front sports seats, while the dual-zone climate control and ambient LED lighting set the mood. An 8.8-inch iDrive infotainment touchscreen incorporates navigation as well as AM/FM/SiriusXM/HD radio functionality and Apple CarPlay integration, while making use of a 12-speaker Harman Kardon audio system.