The BMW M8 (E31) Prototype is the stillborn apex of the first-generation 8 Series program: a front-mid-engine, rear-drive, wide-body grand tourer developed in the early 1990s by BMW Motorsport as a Ferrari-class halo. Finished in bright red and engineered around a bespoke, naturally aspirated 6.0–6.1-liter V12 with individual intakes and carbon plenums, it targeted power outputs unheard-of for a roadgoing BMW of its era. Lightweight closures, fixed aero lighting (in place of pop-ups), B-pillars added for stiffness, and stripped interior architecture marked it out as much more than a cosmetic exercise. Although only a single prototype was built, its hardware and lessons fed directly into the 850CSi (S70B56) and, decades later, informed the narrative for the production M8 (F92) . History Development of the E31 8 Series consumed over DM 1.5 billion through the late 1980s, with the series car debuting at the IAA Frankfurt in early September 1989 . Within BMW, an M-car derivative wa...