The BMW`s 2015 B6 xDrive Gran Coupe has been recently tuned by Alpina, the automaker`s partner in modifying BMWs whenever the case. The all-customized B6 Gran Coupe by Alpina has been tested on the German autobahns, tests which have proven its durability and high-performances. On the outside, the Alpina made its presence by tweaking the [...]