BMW M4 Convertible Restyled and Boosted to 517 HP by Hamann  thanks to a power module and sport exhaust system with 90-mm tailpipes and carbon tips, output has been boosted from 425 hp and 406 lb-ft of torque to 517 hp and 516 lb-ft of torque.

BMW Convertible Restyled and Boosted to 517 HP by Hamann thanks to a power module and sport exhaust system with tailpipes and carbon tips, output has been boosted from 425 hp and 406 lb-ft of torque to 517 hp and 516 lb-ft of torque.

2015 BMW M4 Convertible: Preview - CNET

2015 BMW M4 Convertible Release Date, Price and Specs

2015 BMW Convertible Release Date, Price and Specs - Roadshow

black bmw m4 convertible

black bmw m4 convertible

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