This comprehensive factory service repair manual is specifically designed for the 1990 BMW E30 M3. It serves as a detailed guide for mechanics and enthusiasts alike, providing in-depth instructions to ensure proper maintenance and repair procedures. Covering a wide range of topics, the manual encompasses everything from routine servicing to complex engine and transmission repairs. Each section within the manual is meticulously organized and illustrated with clear diagrams and photographs, facilitating an easy understanding of the procedures. You'll find detailed explanations on engine components, electrical systems, suspension, brakes, bodywork, and more. This manual is an essential resource for anyone seeking to maintain or restore a 1990 BMW E30 M3, providing the necessary information to perform repairs with confidence.

The BMW E30 M3, produced from 1986 to 1991, is a high-performance sports car that stands as a legend in the automotive world. Designed to homologate the E30 3-series for Group A touring car racing, the M3 was born from the need to create a highly competitive and road-legal racing machine. This resulted in a masterpiece of engineering, featuring a specially developed 2.3-liter four-cylinder engine, capable of producing 195 horsepower, which was a significant amount for its time. The engine was paired with a 5-speed Getrag manual transmission, ensuring a thrilling driving experience. Beyond the engine, the M3 boasted extensive weight reduction, aerodynamic enhancements like a prominent rear wing, and a unique body kit with wider wheel arches to accommodate the wider track. These modifications not only enhanced the car's performance but also made it visually distinctive. From its distinctive flared wheel arches to the iconic rear spoiler, the E30 M3 exudes an aura of raw power and aggressive styling. The E30 M3's racing pedigree has solidified its status as a collector's car, highly sought after by enthusiasts. Its iconic design and exceptional handling, combined with its historical significance in motorsport, have cemented its place as a automotive legend. This manual, the 1990 Factory Service Repair Manual, serves as a comprehensive resource for anyone wanting to maintain, restore, or enhance their E30 M3. It provides detailed information on every aspect of the vehicle, from engine and transmission to bodywork and electrical systems. This manual is an invaluable tool for both professional mechanics and dedicated owners, allowing them to understand the intricacies of this iconic car and ensure its long-lasting performance. The manuals offer insights into the engineering marvels behind the M3, guiding owners and mechanics through the nuances of its complex systems, ultimately ensuring that this legendary car continues to be enjoyed for generations to come.