This comprehensive BMW E30 M3 Factory Service Repair Manual covers all model years from 1986 to 1992. It is the official, complete manual produced by BMW, providing detailed information to perform virtually any maintenance or repair task. This manual is not a third-party compilation; it is the genuine repair guide used by factory-trained technicians. The manual is organized for easy navigation and provides step-by-step instructions, accompanied by clear diagrams and illustrations. You will find detailed explanations of every procedure, making it suitable for both experienced mechanics and DIY enthusiasts. Within its pages, you'll discover in-depth information on: * **General Maintenance:** Learn the essential preventative tasks for keeping your BMW E30 M3 in peak condition. * **Troubleshooting:** This section offers systematic guidance for identifying and resolving common issues. * **Engine Service and Repair:** Comprehensive instructions for maintaining and repairing your engine, including details on components, systems and troubleshooting. * **Transmission Service and Repair:** Learn how to maintain and repair the transmission. * **Brake System:** Detailed information on the complete brake system, from maintenance to repair. * **Wiring Diagrams:** Clearly laid out diagrams for understanding and troubleshooting the vehicle's electrical system. * **Electrical System:** A thorough overview of the vehicle's electrical system, with guidance on components and repair. * **Suspension:** Detailed information on the suspension system, including maintenance, repair and troubleshooting. * **Periodic Lubrication:** This section covers all lubrication points and intervals for maintaining your vehicle's longevity. * **Steering:** Comprehensive coverage of the steering system, including maintenance and repair. * **Cooling System:** Information on the cooling system, including maintenance and repair. * **Fuel Injection and Fuel System:** Detailed insights into the fuel system, encompassing maintenance and repair. * **Emission System:** Learn about the emission system's operation, maintenance, and repair. * **Heater and Air Conditioner:** Covers the heater and air conditioning system, including maintenance, operation, and repair details. * **Engine Control System:** Detailed explanations of the engine control system. * **Chassis and Body:** This section covers the vehicle's chassis and body, including repair and maintenance. * **Restraint System:** Information on the safety systems, including maintenance and repair. * **Interior:** Detailed coverage on interior components, including maintenance and repair. * **Differential and Drive:** Explanations of the differential and drive system, including maintenance and repair. * **Axle:** Information on the axle systems, including maintenance and repair. This manual is a valuable resource for anyone seeking to maintain and repair their BMW E30 M3 with confidence.

The BMW E30 M3, produced from 1986 to 1992, is a high-performance sports car that is widely considered to be one of the greatest BMWs ever made. It was born from the homologation requirements of Group A touring car racing, which stipulated that manufacturers had to produce at least 5,000 road-going versions of a car to be eligible to compete. This led to the development of a truly special machine, featuring a lightweight body, powerful engine, and advanced suspension, all of which combined to deliver exhilarating driving dynamics. Under the hood, the E30 M3 was powered by a naturally aspirated 2.3-liter four-cylinder engine, later upgraded to a 2.5-liter unit. The engine was renowned for its high revving capabilities, producing a thrilling, high-pitched wail as it approached its redline. The E30 M3’s performance was nothing short of phenomenal for its time, with the later 2.5-liter model capable of accelerating from 0 to 60 mph in under six seconds. Beyond its raw performance figures, the E30 M3 was lauded for its precise handling, thanks to its advanced suspension setup and well-balanced chassis. The car’s agility and responsiveness made it a joy to drive on both road and track, cementing its status as a true driver’s car. The E30 M3’s legacy continues to this day, with values steadily increasing as collectors and enthusiasts alike recognize its significance and desirability.