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Originally Posted by Jason
We've now had confirmation of the s55 engine's sightly above 7500 RPM redline via the official released specs, but seeing as how the tachometer and redline were ever elusive all these months and years of spy photos, we're happy to finally share with you images of the M3/M4's redline.
Though the actual redline starts at the 7500 mark, expect the rev limiter to kick in a bit after that.
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I was thinking that maybe the use of a lighted display for the Tach indicates that redline is adjusted depending on the current mapping of M settings selected by Driver? Would say sport plus allow an additional 200+ revs before shifts at the expense of MPH over a soft setting. I'm not a techie but still fascinated by the tech in this car.