The Concorde for the Road: Alpina’s B10 Bi-Turbo

Described as “the best 4-door in the world” by Road & Track, the Alpina B10 Bi-Turbo was also the fastest saloon ever when it was unveiled in 1989. Priced at nearly twice the value of a standard E34 M5, it became the best selling model in Alpina’s history up until that point. However, despite its…