🏷️ Basic Information Identification Make: BMW Model: 3 Series (E30) Common Nickname: E30 Chassis Code: E30 Product Name: BMW E30 1984-1990 Workshop Service Repair Manual Codes Covered Years: 1984-1990 Additional Covered Years Implied: 1983-1991 (from cover description) 👋 Introduction Market Position Era: The E30 represents BMW's move towards more refined and driver-focused compact luxury sport sedans and coupes in the 1980s, bridging the gap between the classic 02 series and modern BMWs. Competitive Analysis Competitors: Key competitors included the Mercedes-Benz 190E (W201), Audi 80/90, and increasingly, Japanese marques like the Acura Integra and Lexus ES 250 as the generation progressed. Key Features Design Philosophy: Renowned for its balanced chassis, engaging driving dynamics, rear-wheel-drive platform, and iconic 'Hoffmeister kink' Hofmeister kink at the C-pillar. Manual Value Proposition: Provides essential, in-depth technical information for enthusiasts and mechanics looking to maintain, repair, and restore the legendary E30 chassis, ensuring longevity and optimal performance. 📋 Manual Details Coverage Areas Vehicle Models Covered: 318i, 325, 325e, 325es, 325i, 325is, 325i Convertible Page Count Estimated Page Count: Extensive (typically 1000+ pages for a full factory manual) Manual Type Type: Factory Service Workshop Manual Language Language: English (presumed for a typical US/international market manual) Format Format: Digital Download (PDF) Download Cost: Free 📖 Manual Coverage Systems Covered Mechanical Systems: Engine, Fuel System, Ignition System, Cooling System, Exhaust System, Clutch, Manual Transmission, Automatic Transmission, Driveshaft, Differentials, Suspension (Front & Rear), Steering System, Brakes (Front & Rear), Wheels & Tires Electrical Systems: Basic Electrical Circuitry, Engine Control Unit (ECU), Lighting, Instrumentation, Wiper/Washer System, Heating & Air Conditioning (HVAC), Power Accessories (Windows, Locks), Audio System Wiring, ABS (if equipped) Body And Chassis: Body Panels, Doors, Hood, Trunk, Bumpers, Interior Trim, Seats, Glass, Chassis Components, Rust Prevention & Repair Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks & Replacements, Belt Inspection & Replacement, Spark Plug Replacement Diagnostics And Troubleshooting: Fault Code Diagnosis (OBD I), Symptom-Based Troubleshooting Guides, Electrical Schematics & Diagnosis, Mechanical Component Diagnosis Repair And Rebuild: Engine Overhaul, Transmission Rebuilds, Brake System Repair, Suspension Component Replacement, Steering System Overhaul, Body Panel Repair, Electrical Component Replacement Adjustments And Settings: Valve Adjustments, Ignition Timing, Carburetor/Fuel Injection Adjustments, Wheel Alignment, Parking Brake Adjustment Technical Depth Depth: Comprehensive: Covers everything from basic owner maintenance to full engine and transmission rebuilds, including detailed wiring diagrams and diagnostic procedures. 📊 Manual Specifications File Format Type: Portable Document Format (PDF) Searchability: Likely text-searchable if converted from a digital source or properly OCR'd. Print Quality Quality: Variable (depends on source conversion, but generally high-quality factory data) Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Family: BMW M20 (Inline 6-cylinder) and M10 (Inline 4-cylinder) Performance M20B25 Specs: 2.5L (2494cc) SOHC Inline-6, 168 hp @ 5800 rpm, 167 lb-ft @ 4300 rpm (typical for 325i/325is) M20B27 Eta Specs: 2.7L (2693cc) SOHC Inline-6 (Economy Tuned), 121-127 hp @ 4800 rpm, 170 lb-ft @ 3250 rpm (typical for 325e/325es) M10B18 Specs: 1.8L (1766cc) SOHC Inline-4, 101-114 hp @ 5800-6000 rpm, 103-116 lb-ft @ 3250-4300 rpm (typical for 318i) Fuel System Fuel Delivery: Bosch L-Jetronic or Motronic fuel injection (model and year dependent) Fuel Requirements Octane Rating: Premium Unleaded (91+ Octane recommended) 🔧 Transmission Standard Type: Getrag 260 5-speed manual transmission (most performance models) Optional Type: ZF 4HP22 4-speed automatic transmission Features Clutch Type: Single dry plate, hydraulically actuated Fluid Type Manual Transmission Fluid: BMW MTF LT-2 or equivalent (e.g., Pentosin MTF.2) Automatic Transmission Fluid: ATF Dexron III or equivalent 📐 Dimensions Exterior Wheelbase: Approx. 101.2 inches (2570 mm) Length: Approx. 170.5 inches (4330 mm) Width: Approx. 67.3 inches (1710 mm) Height: Approx. 54.7 inches (1390 mm) Weights Curb Weight: Approx. 2700-3100 lbs (1225-1406 kg), varies by model and equipment Gross Vehicle Weight Rating: Typically around 3900-4100 lbs (1769-1860 kg) Cargo Trunk Volume: Approx. 15.6 cu ft (442 L) 🛡️ Safety Features Ratings NHTSA Ratings: No standardized NHTSA ratings available for this era in a format directly comparable to modern vehicles. However, BMWs of this period were generally well-regarded for structural integrity. Active Features ABS: Optional on most models, standard on later 325i/325is Limited Slip Differential: Optional on 325 models, standard on 325is Passive Features Airbags: Driver-side airbag became optional in later years (late 80s/early 90s), not standard across the board. Seatbelts: 3-point inertia-reel seatbelts front and rear Chassis Structure: Reinforced unibody construction with front and rear crumple zones. 💡 Technology Features Infotainment Audio System: Factory cassette or AM/FM radio with optional CD player (later models). Often aftermarket head units are installed. Speakers: Door-mounted and rear parcel shelf speakers. Driver Assistance Cruise Control: Optional on most models. Climate Control: Manual HVAC system, optional air conditioning. Connectivity Early Features: Limited by era. Focus was on mechanical and driving experience, not digital integration. Antennae are manual or power operated. 🔧 Maintenance Service...