HP RS6 C8 takes on the M5 F90 Competition, RS3 Widebody, and M3 G81 in a showdown of speed and power. #AudiVsBMW #RS6C8 ...

The tuner emphasizes the lightweight nature of the aero components, but we doubt they make any significant difference ...

Mansory dropped a new tuning package for the BMW M5 that's surprisingly subtle—and on Friday the 13th, no less.

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A new CS variant may join both the sedan and wagon lineup, reducing weight but not fixing the M5’s heft problem ...