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Video: AC Schnitzer BMW M4 Goes Out for Testing on Spa-Francorchamps

Video: BMW M4 CS vs BMW M4 GTS Sound Comparison

Video: BMW M4 CS vs BMW M4 GTS Sound Comparison

The best handling cars in BMW’s portfolio these days are also some of the rarest. We’re talking of course about the BMW M4 GTS and the BMW M4 CS, two birds that look similar but…