The BMW M3 (E30) represents a pinnacle of automotive engineering, specifically developed as a homologation special for touring car racing. Produced from 1986 to 1991, this iconic compact executive sports coupe, particularly the 1990 model year, is derived from the E30 3 Series platform. It features a distinctive aerodynamic body kit, including a front air dam, rear spoiler, and side skirts, along with chassis enhancements such as a wider track and revised suspension geometry. Powered by the high-revving S14B23 2.3-liter inline-4 engine, this M3 is celebrated for its exceptional handling, motorsport pedigree, and status as a highly sought-after modern classic, often compared to rivals like the Porsche 944 and Mercedes-Benz 190E 2.3-16.

This comprehensive service, repair, and workshop manual provides in-depth technical information essential for maintaining and restoring the BMW M3 (E30). Covering over 800 pages, it details all major systems, including the S14B23 engine, Getrag 265 transmission, fuel and ignition systems, suspension, steering, brakes, and electrical components. The manual offers step-by-step repair procedures, diagnostic guides, troubleshooting advice, and detailed technical specifications, including torque values and fluid capacities. It is an indispensable resource for owners, mechanics, and technicians aiming to preserve the performance and integrity of this legendary vehicle.