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      01-16-2020, 03:51 PM   #109
gsrbri
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Drives: F87 6MT
Join Date: Jul 2011
Location: Boston, MA

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It's simple

M car is a platform-based, M designed car w/a minor exception or two (1M, OG M2).

M version car (e.g., M340i) is a "breathed-on" or in old school terms "hot rodded" car.

Simple as that. The track factor is: if you can put racing brake fluid and pads in the car, and R compounds on it, and It can survive a 10 track event season, it's a true M (SUVs excluded). An M performance version won't be durable enough - period.

Easy :-)
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