Positioning:
A homologation special designed for racing, renowned for its driving dynamics and driver engagement. Positioned as a premium, performance-oriented sports coupe.
Competitors:
Porsche 944, Mercedes-Benz 190E 2.3-16 Cosworth, Ford Sierra RS Cosworth.
Performance Enhancements:
Wider track, revised suspension geometry, flared wheel arches, distinct M3 body kit, more powerful engine compared to standard E30 models.
Driving Experience:
Exceptional handling, balanced chassis, direct steering feedback, high-revving engine.
Engine Systems:
Engine mechanical, fuel injection (Bosch L-Jetronic/Motronic), ignition system, cooling system, lubrication system, exhaust system, emissions control.
Transmission Systems:
Clutch, gearbox overhaul, shifting mechanisms, driveshafts, differential.
Suspension Steering:
Front suspension (MacPherson struts, control arms), rear suspension (semi-trailing arms), steering rack, power steering system.
Braking System:
Front and rear disc brakes, ABS (if equipped), brake hydraulics, parking brake.
Electrical System:
Battery, alternator, starter, lighting, wiring diagrams, fuse box, relays, ECU, sensors, instrumentation.
Body Chassis:
Body structure, doors, hood, trunk, bumpers, body panels, interior trim, glass, sunroof (if equipped).
Maintenance Procedures:
Routine checks, oil changes, filter replacements, spark plug replacement, belt adjustments, fluid checks and top-offs.
Repair Procedures:
Engine component replacement (pistons, valves, bearings), transmission rebuild, brake caliper overhaul, suspension component replacement, electrical component diagnosis and replacement.
Troubleshooting:
Diagnostic charts, symptom-based troubleshooting, fault code interpretation (if applicable to the era).
Specifications Torques:
Detailed torque specifications for all critical fasteners, engine clearances, valve lash adjustments.
Depth:
Comprehensive: Covers everything from basic scheduled maintenance to full engine and transmission rebuilds, including diagnostic procedures and electrical system troubleshooting.
Configuration:
Inline-4, DOHC, 16 valves
Displacement:
2302 cc (2.3 Liters)
Horsepower:
192 hp (141 kW) at 6,750 rpm
Torque:
230 Nm (170 lb-ft) at 4,750 rpm
Fuel Delivery:
Bosch L-Jetronic fuel injection (later models may use Motronic)
Fuel Type:
Unleaded Premium (Octane rating appropriate for the era, typically 95-98 RON)
ECU Type:
Bosch Motronic (likely ECU variant for 1987)
Length:
Approx. 4,345 mm (171.1 in)
Width:
Approx. 1,700 mm (66.9 in) (wider than standard E30)
Height:
Approx. 1,370 mm (53.9 in)
Wheelbase:
Approx. 2,565 mm (100.98 in)
Curb Weight:
Approx. 1,200 - 1,250 kg (2,646 - 2,756 lbs)
Gvw:
N/A (Gross Vehicle Weight not commonly specified in this manner for performance cars)
Trunk Volume:
Approx. 400 liters (14.1 cu ft)
Crash Test Ratings:
NHTSA/Euro NCAP ratings from this era are less standardized and comparable to modern standards. Focus on structural integrity for its time.
ABS:
Optional on early models, standard on later ones or specific markets.
Traction Control:
Not typically available on the 1987 E30 M3.
Seatbelts:
3-point inertia reel seatbelts front and rear.
Airbags:
Not standard or available on the 1987 E30 M3.
Body Structure:
Reinforced chassis, safety cell design typical of BMW's commitment to occupant protection.
Oil Change Interval:
Typically 10,000 - 15,000 km (6,000 - 9,000 miles) or 12 months, whichever comes first. Refer to manual for specific interval.
Air Filter Replacement:
Every 20,000 - 30,000 km (12,000 - 18,000 miles) or as needed based on condition.
Spark Plug Replacement:
Every 30,000 - 40,000 km (18,000 - 24,000 miles). Specific plug type and gap required.
Engine Oil:
BMW High Performance Synthetic SAE 15W-50 or 20W-50. Refer to manual for exact BMW approved grades.
Coolant:
BMW Blue Antifreeze/Coolant (Glysantin G48 equivalent), mixed 50/50 with distilled water.
Brake Fluid:
DOT 4 (low viscosity, high boiling point). BMW recommends DOT 4 LV.
Transmission Fluid:
MTF LT-2 (or equivalent synthetic manual transmission fluid). Check manual for specific API rating.
Differential Fluid:
BMW Hypoid Gear Oil G2 (or equivalent synthetic LSD oil, API GL-5).
Engine Wear:
Valve guide wear, oil consumption, VANOS issues (if applicable to later models, but not typically on the S14 of this era). Check for oil leaks.
Suspension Bushings:
Wear in control arm bushings, trailing arm bushings, and subframe bushings leading to handling degradation.
Rust:
Common areas include wheel arches, sills, rocker panels, and around the windows.
Electrical Gremlins:
Aging wiring harnesses, corroded connectors, faulty relays can lead to various intermittent electrical problems.
Bmw Motorsport:
BMW M GmbH (formerly BMW Motorsport) legacy of creating high-performance vehicles derived from road cars for racing homologation.
E30 M3 Development:
Developed to compete in Group A touring car racing, requiring a significant number of production examples. Featured unique bodywork and chassis modifications.
Production Years:
1986-1991 (E30 M3)
Manufacturing Location:
Munich, Germany (primarily)
Total Production:
Approx. 17,970 units worldwide (all E30 M3 variants).