Monumental pace, chassis upgrades add poise and composure, fruity exhaust. Styling won’t suit ... And when it comes to BMW tuning there’s one name that crops up more than most – AC Schnitzer.

The new M550i has arrived along with ... As speeds rise the deep resonant burble exhaust does fade to the kind of flat, computerised noise that BMW seems to integrate into most its sports models ...

It is part of an aftermarket package encompassing not just this aerodynamic body kit, but also a custom exhaust system to make the biturbo 4.4-liter V8 engine sound even better. BMW M550i With AC ...