Target Audience:
Enthusiasts, DIY mechanics, and professional technicians working on BMW E30 Touring and Convertible models.
Value Proposition:
Provides the definitive technical resource for maintaining and repairing these iconic BMW models, covering body styles often overlooked by more general manuals.
Comprehensive Coverage:
Includes detailed procedures for both Touring and Convertible variants, which have unique structural and mechanical aspects.
Diagnostic Support:
Offers extensive troubleshooting sections to help diagnose and resolve complex issues.
Technical Illustrations:
Likely includes detailed diagrams, exploded views, and wiring schematics crucial for understanding assembly and repair.
Engine Mechanical:
Engine assembly, disassembly, overhaul, timing, cooling, lubrication, fuel delivery (carburetor/injection), emission controls, exhaust systems.
Engine Electrical:
Ignition system, starting and charging systems, engine control unit (ECU) diagnostics, sensors, wiring diagrams.
Transmission Manual:
Clutch operation, manual gearbox overhaul, shift linkage, driveshafts, differentials.
Transmission Automatic:
Automatic transmission operation, servicing, troubleshooting, and rebuilding (if applicable to specific models covered).
Suspension:
Front and rear suspension components, shock absorbers, springs, bushings, alignment procedures.
Brakes:
Brake system operation (hydraulic, disc/drum), ABS (if equipped), brake fluid, component replacement, bleeding procedures.
Steering:
Steering system operation, power steering system servicing, steering rack, tie rods, wheel alignment.
Electrical Systems:
Lighting, instrumentation, wipers, horn, power windows, central locking, convertible top operation (for convertible models), fuse/relay identification and testing.
Body And Chassis:
Body panel repair, rust prevention, door mechanisms, interior trim, convertible top frame and mechanism, glass replacement, chassis component repair.
Climate Control:
HVAC system operation, blower motor, heater core, A/C system servicing (if equipped).
Routine Maintenance:
Oil changes, filter replacements, spark plug replacement, coolant checks, belt inspections and replacement, fluid level checks.
Troubleshooting Diagnostics:
Step-by-step diagnostic guides for common drivability, electrical, and mechanical issues.
Component Replacement Repair:
Detailed instructions for removing, inspecting, repairing, and reinstalling all major and minor vehicle components.
Rebuilding Overhauls:
Comprehensive guides for engine, transmission, differential, and carburetor/injector rebuilds.
Wiring Diagrams:
Detailed electrical schematics for all vehicle systems.
Specifications Torques:
Torque specifications for all fasteners, critical clearances, and adjustment procedures.
Depth Of Coverage:
Comprehensive, from basic maintenance to in-depth engine and transmission rebuilding, and advanced electrical diagnostics.
Engine Family:
BMW M20 and M40 inline-four and inline-six cylinder engines.
Typical Engine Variants:
316i (M40 1.8L I4), 318i (M10 1.8L I4 / M40 1.8L I4), 320i (M20 2.0L I6), 320is (M20 2.0L I6 - special edition), 325i/325e (M20 2.7L/2.5L I6).
Horsepower Range:
Approximately 102 hp (316i) to 170 hp (325i).
Torque Range:
Approximately 145 Nm (316i) to 226 Nm (325i).
Fuel Delivery Types:
Bosch L-Jetronic (early models), Bosch Motronic (later models), and potentially carburetors on some base models.
Wheelbase Mm:
Approx. 2565 mm (Touring & Convertible) vs. 2570 mm (Sedan/Coupe).
Overall Length Mm:
Touring: Approx. 4325 mm; Convertible: Approx. 4340 mm.
Overall Width Mm:
Approx. 1675 mm.
Overall Height Mm:
Touring: Approx. 1370 mm; Convertible: Approx. 1370 mm (top up).
Cargo Capacity Liters Touring:
Significantly larger than sedan/coupe, practical for utility (specific figures vary).
Curb Weight Kg Range:
Approx. 1150 kg to 1350 kg depending on engine and body style.
Crash Test History:
E30 platform generally performed well for its era, but official NHTSA/Euro NCAP ratings for these specific body styles are limited. The E30 chassis was known for its robust build.
Anti Lock Brakes:
Optional ABS on later models, particularly on higher-performance variants.
Seatbelts:
Three-point inertia-reel seatbelts, driver and passenger airbags (rarely standard, often optional or absent on early models).
Body Structure:
Reinforced chassis and A-pillars, particularly important for the convertible models.
Oil Change Interval:
Typically every 7,500 - 10,000 miles or 12 months, depending on driving conditions and oil type used. Refer to manual for precise intervals.
Timing Belt Replacement:
For M40 engines (4-cyl): Typically every 40,000 - 60,000 miles or 4 years. M20 engines (6-cyl) use a timing chain, which is generally maintenance-free but requires inspection for tensioner wear.
Coolant Flush:
Every 2-3 years or as specified in the manual.
Engine Oil Grade:
Varies by engine and climate. Common grades include 10W-40, 15W-40, or 5W-30. Always consult the manual for specific recommendations (e.g., BMW Longlife-98 or API SF/SG).
Coolant Type:
Ethylene glycol-based coolant, typically a 50/50 mix with distilled water. BMW blue coolant (G48) or equivalent is often recommended.
Brake Fluid Type:
DOT 3 or DOT 4.
Transmission Fluid Manual:
Gear oil API GL-4, typically 75W-90 or 80W-90.
Transmission Fluid Automatic:
Dexron III or equivalent ATF (Automatic Transmission Fluid).
Common E30 Problems:
Cooling system component failure (radiator, water pump, thermostat), fuel distributor issues (K-Jetronic), rear axle mounting points fatigue, differential wear, strut tower rust, window regulator failure, aging rubber bushings (control arms, sway bars), convertible top hydraulic leaks (if applicable), fuel tank sender unit failure.
Maintenance Recommendations:
Regular inspection of cooling system hoses and components, periodic replacement of fuel filters, careful attention to rust in common areas, and diligent servicing of the convertible top mechanism are key to longevity.
Bmw Legacy:
BMW's reputation for building sporty, driver-focused sedans and coupes. The E30 continued this legacy, becoming one of the most successful BMW models.
E30 Lineage:
Evolved from the E21, introducing more modern styling and a wider range of engine options. The Touring and Convertible variants broadened its appeal significantly.
Touring Introduction:
The E30 Touring (often referred to as the E30/5) was introduced in 1987, adding practicality to the 3 Series lineup.
Convertible Introduction:
The E30 Convertible (E30/2C) debuted in 1985, replacing the earlier E21 convertible.
Production Years:
1983-1991 (for the E30 generation).
Manufacturing Locations:
Primary production in Germany, with potential assembly in other locations.
