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Originally Posted by David.m
Assuming Real OEM is accurate aren't all parts identical except for the alloy/carbon front strut braces. There is a published interview somewhere on the forum with the ///M chief engineer which acknowledges no change to suspension in the M2C but (from memory) claims improved turn-in from the strut braces.
Problem with majority if not all of the 'comparisons' is the influence of unconscious bias and/or commercial interests (journos). Not saying the M2C isn't an improvement (handling) but there is no evidence of suspension changes in the M2C. It's likely the strut braces are the only change.
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That is correct. All part numbers for all arms, shocks and coils are the same.
This is the quote from the BMW guy:
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Originally Posted by A BMW guy
“The M2 Competition tilts the focus more towards race track performance so we have increased the amount of content from the M3/M4 models,” explained Dirk Häcker, BMW M’s VP of Engineering. Given that the bodyshell and front and rear inner structure was already modified to accept the M3/M4 suspension and wide rubber no further work was required here apart from stiffening the front end.
“Since the track is identical to the M3/M4 carbon-fiber engine compartment brace bolted straight in. This significantly reduces torsional flex in the engine compartment ‘box’ and keeps the front suspension geometry closer to spec under load,” he said. “We experimented with variations of the M2 spring and damper rates but found that with the improved front-end stiffness the original settings were ideal,” explained Peter Schmid, Project Manager for Driving Dynamics. “This is the first time ever in my career that this has happened, and all we needed, in the end, was some software recalibration of the control electronics.”
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https://carbuzz.com/cars/bmw/m2/2019 about 1/3 of the way down