🏷️ Basic Information Identification Make: BMW Model: 325 Sub Model: 325is Model Years Covered: 1984-1990 Codes Chassis Code: E30 👋 Introduction Market Position Segment: Compact Executive Sports Sedan/Coupe Positioning: The 325is was positioned as a performance-oriented variant of the E30 3 Series, offering enhanced handling and a more powerful engine compared to base models. Competitive Analysis Key Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo Milano, possibly some lower-end Porsche 944 models. Key Features Driver Focus: Renowned for its balanced chassis, rear-wheel-drive dynamics, and driver-centric cockpit. Performance Emphasis: The 'is' designation typically indicated sportier suspension, aerodynamic enhancements (like the front air dam and rear spoiler), and often larger wheels. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Page Count Estimated Page Count: Comprehensive (exact number not provided in source, but indicative of full workshop manual) Manual Type Type: Workshop Manual / Service Manual / Repair Manual Language Language: English Format Format: Digital (assumed PDF, common for workshop manuals) 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair, overhaul for M20 inline-6 engines. Fuel System: EFI system (Bosch Motronic), fuel injection, fuel pump, injectors, pressure regulation. Ignition System: Ignition timing, coil, distributor, spark plugs, control module. Cooling System: Radiator, water pump, thermostat, hoses, fan, coolant specifications. Exhaust System: Catalytic converter, muffler, exhaust manifolds, gasket replacement. Transmission Manual: Clutch, gearbox overhaul, gearshift mechanism, fluid specifications. Transmission Automatic: Automatic transmission (e.g., ZF 4HP22) diagnostics, repair, fluid specifications, control systems. Drivetrain: Driveshafts, universal joints, differential, rear axle overhaul. Suspension Front: Struts, control arms, ball joints, bushings, alignment procedures. Suspension Rear: Trailing arms, shock absorbers, bushings, alignment procedures. Steering System: Power steering pump, rack and pinion, tie rods, fluid specifications. Brakes Front: Disc brake calipers, pads, rotors, bleeding procedures. Brakes Rear: Disc brake calipers, pads, rotors, parking brake adjustments. ABS: ABS system diagnostics, sensor testing, hydraulic unit. Electrical System: Wiring diagrams, component testing, alternator, starter, battery, fuses, relays. Lighting System: Headlights, taillights, interior lighting, bulb replacement. Body Exterior: Body panel removal and installation, door mechanisms, glass, seals, bumpers. Body Interior: Dashboard removal, seat mechanisms, trim panels, sound deadening. HVAC: Heating, ventilation, air conditioning system diagnostics, refrigerant, components. Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, fluid level checks, tune-ups. Troubleshooting: Diagnostic charts, common problem identification, step-by-step troubleshooting guides. Repair: Component replacement, assembly, disassembly, adjustments. Rebuild: Engine, transmission, and differential overhaul procedures. Diagnostics: Electrical system diagnostics, engine performance testing, fuel system testing. Specifications: Torque specifications for critical fasteners, clearances, measurements. Technical Depth Depth: Comprehensive, covering routine maintenance to complete engine and transmission rebuilds. Diagnostics Level: Advanced, including electrical troubleshooting and system-specific diagnostics. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) - typical for this era's digital manuals, ensuring searchability and printability. Print Quality Clarity: High-resolution scans for clear text and diagrams, suitable for printing. Binding Type Binding: N/A (Digital format) Paper Type Paper Quality: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Code: M20B25 Engine Type: Naturally aspirated inline-6 cylinder Displacement: 2.5 Liters (2494 cc) Bore X Stroke: 84.0 mm x 75.0 mm Compression Ratio: 8.8:1 Valvetrain: SOHC (Single Overhead Camshaft), 2 valves per cylinder Performance Horsepower Output: Approximately 170 hp @ 5800-6000 rpm (varies slightly by market and year) Torque Output: Approximately 225 Nm (166 lb-ft) @ 4000-4300 rpm (varies slightly by market and year) Fuel System Fuel Delivery: Bosch L-Jetronic / Motronic (Electronic Fuel Injection) Fuel Type: Premium Unleaded Gasoline (91+ octane RON) 🔧 Transmission Standard Type Standard: Getrag 260 5-speed manual transmission Optional Type Optional: ZF 4HP22 4-speed automatic transmission Features Rear Axle Ratio: Typically 3.73:1 for 5-speed, 3.46:1 for 4-speed auto (may vary) 📐 Dimensions Exterior Wheelbase: 2565 mm (101.0 in) Length: 4340 mm (170.9 in) Width: 1675 mm (66.0 in) Height: 1380 mm (54.3 in) Front Track: 1406 mm (55.3 in) Rear Track: 1438 mm (56.6 in) Weights Curb Weight: Approx. 1280-1350 kg (2822-2976 lbs) depending on body style and transmission Cargo Trunk Volume: Approximately 450 liters (15.9 cu ft) 🛡️ Safety Features Ratings Safety Ratings: NHTSA ratings from this era were less standardized. Focus was on passive safety features common for the time. Active Features Brake System: 4-wheel disc brakes (ventilated fronts), ABS (Anti-lock Braking System) optional on early models, standard on later ones. Suspension Stability: Sport-tuned suspension contributing to vehicle stability. Passive Features Body Structure: Reinforced passenger cell, crumple zones. Restraints: 3-point seat belts, optional driver's side airbag on later models. 💡 Technology Features Infotainment Audio System: Factory AM/FM cassette player, often with premium sound options (e.g., Bavaria C). Driver Assistance ABS: Optional on early models, standard on later 325is/iX variants. Connectivity Connectivity Features: Limited by era; primarily focused on basic automotive functions. No modern Bluetooth or USB connectivity. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles or 6-12 months (depending on driving conditions and oil used). Spark Plug Replacement:...