2018 BMW M550i – HD Road Test Review

What if one of the most comfortable cars you’ve ever driven … is also one of the fastest? A big sedan that pivots like a track star? How has BMW defied physics?  Yes. The M550i is a revelation on the road.  After a week of flogging this beauty for kicks – and the cameras – we came away absolutely in love with BMW’s fastest ever 5 series. The 3.9s sprints to 60-mph from the almost-violent launch control are enough to make up for its lack of M5 sounds from the V8TT.  The hyper-adaptive suspension and standard xDrive turn a soft car …

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