🏷️ Basic Information Identification Make: BMW Model: 325 / 325i Generation Code: E30 Generation Start Year: 1987 End Year: 1991 Codes Chassis Code: E30 👋 Introduction Market Position Segment: Compact Executive Sedan/Coupe Reputation: Known for sporty handling, robust engineering, and driver engagement. Competitive Analysis Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240. Key Features Design: Iconic Chris Bangle-influenced design, quintessential BMW proportions. Performance Focus: Rear-wheel drive platform, balanced chassis, responsive engines. Build Quality: Typical BMW build quality, designed for longevity. 📋 Manual Details Coverage Areas Covered Years: 1987, 1988, 1989, 1990, 1991 Page Count Total Pages: 227 Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnostics, fuel injection (Bosch Motronic), ignition system, cooling system, exhaust system, engine mechanicals (cylinder head, block, crankshaft, pistons, connecting rods). Transmission: Manual and automatic transmission repair, clutch operation, gearbox components, driveshafts, differential. Brakes: Hydraulic system, ABS (where applicable), brake pads, rotors, calipers, master cylinder, brake lines, parking brake. Electrical: Complete wiring diagrams, starter motor, alternator, battery, lighting systems, fuses, relays, instrument cluster, power windows, power locks, radio, control modules. Suspension Steering: Front and rear suspension components, shock absorbers, struts, springs, bushings, wheel bearings, power steering system, steering rack, tie rod ends. Body Chassis: Body panel removal and installation, doors, hood, trunk, bumpers, interior trim, chassis lubrication, rust prevention. HVAC: Heating, ventilation, and air conditioning system diagnosis and repair, blower motor, heater core, evaporator, refrigerant. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and changes, belt inspection and replacement. Diagnostics: Troubleshooting guides for common problems, diagnostic fault codes (where applicable), component testing procedures. Repair: Step-by-step repair instructions for all major vehicle systems, including component disassembly, cleaning, inspection, and reassembly. Adjustment: Valve adjustments, parking brake adjustment, idle speed adjustment. Lubrication: Lubrication points and schedules, grease types, oil specifications. Specification Settings: Torque specifications for critical fasteners, engine timing settings, wheel alignment specifications. Technical Depth Depth: Comprehensive: Covers everything from routine maintenance and minor repairs to complete engine and transmission overhauls. Includes detailed diagnostic procedures and exploded views. 📊 Manual Specifications File Format PDF Quality: High-resolution scans, often searchable text for ease of navigation. Printability: Printable pages for convenient workshop use. Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code: M20B27 (often referring to the 2.7L) / M20B25 (2.5L for 325i) Engine Type: Inline 6-cylinder, SOHC Displacement 325I: 2.5 Liters (2494 cc) Bore X Stroke 325I: 84 mm x 75 mm Compression Ratio 325I: 8.5:1 or 9.1:1 depending on market/version Performance Horsepower 325I: 168-170 hp @ 5800-6000 rpm (varies by market and specific engine variant) Torque 325I: 220-230 Nm (162-169 lb-ft) @ 4300-4800 rpm (varies by market and specific engine variant) Fuel System Fuel Delivery: Bosch Motronic electronic fuel injection (EFI) Fuel Type: Unleaded gasoline (RON 91 or higher recommended) Ignition System Ignition Type: Distributorless ignition system (DIS) or distributor-based with electronic control (depending on specific year/market variant). 🔧 Transmission Standard Type 325I: Getrag 260 5-speed manual transmission Optional Type 325I: ZF 4HP22 4-speed automatic transmission Features Clutch Type: Hydraulically operated single dry plate clutch (manual) Differential: Standard open differential; optional limited-slip differential (LSD) available on some models. 📐 Dimensions Exterior Body Styles: 2-door coupe, 4-door sedan Wheelbase: Approximately 2565 mm (101 inches) Length: Approximately 4340 mm (170.9 inches) Width: Approximately 1677 mm (66 inches) Height: Approximately 1365 mm (53.7 inches) Weights Curb Weight: Approximately 1250-1350 kg (2755-2976 lbs), depending on body style and options. 🛡️ Safety Features Ratings Crash Test Data: Limited official NHTSA/IIHS ratings for this era; anecdotal evidence suggests reasonable structural integrity for its time. Active Features ABS: Optional Anti-lock Braking System (ABS) available on later models. Passive Features Airbags: Driver's side airbag was optional and became more common in later production years. Seatbelts: 3-point inertia reel seatbelts with pretensionsers. 💡 Technology Features Infotainment Audio System: Factory premium sound systems available (e.g., Bavaria C) with cassette player. Aftermarket head unit compatibility is common. Display: Basic analog gauges and warning lights on the instrument cluster. Driver Assistance Cruise Control: Optional cruise control system. Connectivity Phone Integration: No factory integration; requires aftermarket solutions. 🔧 Maintenance Service Intervals Oil Change: Every 7,500 - 10,000 miles (12,000 - 16,000 km) or annually. Spark Plugs: Every 30,000 miles (48,000 km), typically using copper-core spark plugs (e.g., NGK BPR6ES). Timing Belt Chain: The M20 engine uses a timing chain, which is generally considered maintenance-free unless stretched or worn. Replacement would be on an as-needed basis, often diagnosed by noise. Fluid Specifications Engine Oil: API SF or SG, SAE 10W-40 or 15W-40 (check manual for specific viscosity based on ambient temperature). Capacity: Approx. 4.25 Liters (4.5 Quarts) with filter. Coolant: BMW Blue Longlife Coolant or equivalent, mixed...