2013 BMW M3 Droptop Defines Sports Sedan

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Pure performance addicts generally shun convertibles because sawing off a car’s roof weakens the entire structure, which leads to flexing, shuddering and other unpleasant behavior over bumps or under high loads. Engineers can stiffen the car back up with extra bracing, but that adds weight, which performance addicts don’t like either. On top of that, […]