Alpina Unveils 507-Hp B6 Biturbo Convertible
Nice as it may be, the BMW 6 Series convertible doesn’t really make our heart beat any faster. It’s a soft, plush open-top tourer, and though the 4.4-liter twin-turbocharged V8 underhood certainly doesn’t skimp on the power, it doesn’t really make for an enthusiastic driving experience. Enter Alpina, the BMW tuning house that has given us the 7 Series-based B7 [...]
