🏷️ Basic Information Identification Make: BMW Model: 325i Chassis Code: E30 Model Years Covered: 1987-1991 Codes Engine Code Primary: M20B25 👋 Introduction Market Position Target Audience: BMW E30 enthusiasts, DIY mechanics, independent repair shops Value Proposition: Provides essential, comprehensive technical data for maintaining and repairing the BMW E30 325i, enabling cost-effective ownership. Competitive Analysis Differentiation: Focuses on the specific E30 325i model and provides the detail required for hands-on mechanical work, distinguishing it from general owner's manuals. Key Features Feature 1: All-encompassing repair procedures for every aspect of the vehicle. Feature 2: Detailed exploded views and diagrams for precise disassembly and reassembly. Feature 3: Instant download availability for immediate access. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: PDF Distribution Method: Instant Download Compatibility: PC & Mac Compatible (Windows 95, 98, 2000, NT, XP, Vista, 7, 8, 10, 11; macOS) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, component testing, timing belt replacement, piston/ring inspection, valve train adjustments Engine Management: Fuel injection (Bosch Motronic), ignition system, sensors, actuators, troubleshooting diagnostic codes Transmission Manual: Clutch, gearbox disassembly/reassembly, gear shift linkage, fluid changes Transmission Automatic: Hydraulic control, torque converter, valve body, fluid service, troubleshooting Drivetrain: Driveshafts, CV joints, differential, rear axle assembly Suspension: Front struts, rear semi-trailing arms, bushings, springs, dampers, wheel bearing replacement Steering: Power steering system, rack and pinion, tie rods, steering column Brakes: Disc brakes (front and rear), ABS system (if equipped), brake fluid flush, caliper/rotor replacement, parking brake Electrical System: Wiring diagrams, battery, alternator, starter motor, lighting, fuses, relays, interior electronics Bodywork And Interior: Panel replacement, trim removal, door mechanisms, convertible top mechanisms (if applicable), seat removal Procedures Included Maintenance: Oil change, filter replacement, spark plug replacement, coolant flush, brake pad inspection/replacement, belt replacement Troubleshooting: Diagnostic procedures for common drivability issues, electrical faults, mechanical failures Repair: Detailed step-by-step instructions for component removal, repair, and reinstallation Overhauls: Complete engine and transmission rebuild procedures Adjustments: Valve adjustments, idle speed adjustments, timing adjustments Technical Depth Depth Of Coverage: Comprehensive (from basic maintenance to complete engine/transmission rebuilds and advanced diagnostics) Diagnostic Tools: References to diagnostic procedures, potentially including older OBD-I related concepts Illustrations: High-quality exploded views, diagrams, and photographs Specification Detail: Torque specifications, clearances, fluid capacities, electrical resistance values 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content Printability: Printable pages Print Quality Image Resolution: High-resolution for clear viewing of diagrams and text Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: M20B25 Engine Type: Inline 6-cylinder, SOHC (Single Overhead Camshaft) Displacement: 2.5 Liters (2494 cc) Bore X Stroke: 84.0 mm x 75.0 mm Performance Horsepower: 168-170 hp (125-127 kW) @ 5800-6000 rpm (variant dependent) Torque: 225-230 Nm (166-170 lb-ft) @ 4300-4500 rpm (variant dependent) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (Premium Octane Recommended) Ignition System: Electronic Ignition System with Knock Sensor Engine Maintenance Timing Belt Interval: Recommended replacement every 60,000 miles or 4 years (crucial to prevent catastrophic engine damage) 🔧 Transmission Standard Transmission Type Std: Getrag 260 5-speed Manual Transmission Optional Transmission Type Opt: ZF 4HP22 4-speed Automatic Transmission Features Clutch Type: Hydraulically Actuated Single Dry Plate Clutch Manual Fluid Spec: BMW MTF LT-2 or equivalent (e.g., Pentosin MTL 75W-80 GL-4) Automatic Fluid Spec: Dexron II/III or ATF Dexron III (BMW P/N 81 22 9 400 275) 📐 Dimensions Exterior Wheelbase: 2570 mm (101.2 in) Length: 4345 mm (171.1 in) Width: 1675 mm (65.9 in) Height: 1380 mm (54.3 in) Weights Curb Weight Manual: Approx. 1280 kg (2820 lbs) Curb Weight Automatic: Approx. 1300 kg (2865 lbs) Gross Vehicle Weight Rating: Varies by model/options, typically around 1800 kg 🛡️ Safety Features Ratings NHTSA Crash Test Rating: Not directly comparable to modern standards; E30 known for robust build quality for its era. Frontal impact testing was less comprehensive. Active Features ABS: Anti-lock Braking System (ABS) was an optional feature on later E30 models, including the 325i. Passive Features Seatbelts: 3-point inertia-reel seat belts in front and rear. Body Structure: Reinforced passenger safety cell, crumple zones. Steering Column Collapse: Collapsible steering column for improved driver protection in frontal impacts. 💡 Technology Features Infotainment Audio System: Factory AM/FM/Cassette player, often with upgraded speaker systems available. Early CD players were rare and optional. Climate Control: Manual climate control standard, optional automatic climate control (ECC - Electronic Climate Control) on higher trims. Driver Assistance Cruise Control: Optional cruise control system. Connectivity Connectivity Features: Limited by era; primarily focused on on-board diagnostics through Motronic system for mechanics. No modern Bluetooth or USB integration. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 - 10,000 miles or 12 months (depending on driving conditions and oil type used). Air Filter Replacement: Every 15,000 - 30,000 miles, or as needed based...