This manual covers the BMW M3, chassis code E30, produced from 1986-1991. Renowned for its motorsport heritage and engineering prowess, the E30 M3 was developed as a homologation special for racing, embodying a lightweight, agile, and track-focused design philosophy. Powered by the naturally aspirated S14 engine, a 2.3-liter DOHC 4-cylinder unit featuring Bosch L-Jetronic fuel injection and individual throttle bodies, this iconic vehicle is a testament to BMW's commitment to performance and driving dynamics. Its robust construction, rear-wheel-drive system with a limited-slip differential, and responsive suspension make it a highly sought-after classic for enthusiasts and collectors alike.

This comprehensive workshop and service manual provides detailed information for the full service and repair of the BMW E30 M3. It covers essential maintenance procedures, engine and transmission overhauls, brake and suspension servicing, and electrical system diagnostics. With factory-level detail, including torque values, clearances, and critical measurements, this manual is an indispensable resource for BMW enthusiasts, DIY mechanics, and professional technicians. It empowers users to perform accurate diagnoses, efficient repairs, and proper maintenance, ensuring the longevity and optimal performance of this legendary vehicle.