The BMW 7 Series E23 730 was a luxury sedan produced from 1977 to 1979. It marked the beginning of the third generation (E23) of the 7-Series and featured significant updates over its predecessor.
Design and Features:
- Length: 5,047 mm (198.6 in)
- Width: 1,816 mm (71.5 in)
- Height: 1,457 mm (57.4 in)
- Wheelbase: 3,015 mm (118.3 in)
- Curb weight: approximately 1,800 kg (3,970 lbs)
The E23 730 had a more aerodynamic design compared to its predecessor, with a curved roofline and a distinctive 'hump' on the rear decklid. It was available as a four-door sedan only.
Engine and Performance:
- Engine: M-30 inline-six cylinder
- Displacement: 3,000 cc (183.1 cu in)
- Power output: 180 hp (133 kW) at 5,500 rpm
- Torque output: 250 Nm (184 lb-ft) at 4,200 rpm
- Top speed: electronically limited to 130 mph (210 km/h)
The M-30 engine was the largest and most powerful inline-six cylinder produced by BMW at that time. It featured a five-speed manual transmission or an optional four-speed automatic transmission.
Interior and Comfort:
- Interior design: luxurious, with high-quality materials and detailed craftsmanship
- Front seats: adjustable, with lumbar support and armrests
- Rear seats: foldable to increase cargo space, with individual reading lights and air vents
- Audio system: an optional cassette player or AM/FM radio
The interior of the E23 730 was designed to provide a high level of comfort and luxury. The materials used were of the highest quality, and attention to detail was paramount.
Suspension and Handling:
- Front suspension: MacPherson strut-type with coil springs
- Rear suspension: semi-trailing arm-type with coil springs
- Steering: rack-and-pinion
The E23 730 featured an advanced suspension system that provided excellent handling and stability. The steering was precise and responsive, making it a joy to drive on both paved and unpaved roads.
Safety Features:
- Dual airbags (driver and passenger)
- Anti-lock braking system (ABS) not available
- Central locking with remote key
The E23 730 was one of the first luxury sedans to feature dual airbags as standard equipment. This, combined with its advanced suspension and precise steering, made it a very safe vehicle to drive.
Warranty and Maintenance:
- Warranty: 3 years or 100,000 km (62,137 miles)
- Recommended maintenance interval: every 15,000 km (9,320 miles)
BMW offered a comprehensive warranty on the E23 730 that covered repairs for three years or 100,000 km. Regular maintenance was recommended to ensure optimal performance and longevity.
Production Numbers:
- Approximately 5,500 units produced from 1977 to 1979
The production numbers for the E23 730 were relatively low compared to other BMW models of that era. This made it a rare and sought-after collector's item among car enthusiasts.
Conclusion:
The BMW 7 Series E23 730 was a significant improvement over its predecessor, with advanced suspension, precise steering, and luxurious interior design. Its powerful M-30 engine and exceptional handling made it a joy to drive on both paved and unpaved roads. While the production numbers were relatively low, this model remains highly sought after by collectors and enthusiasts today.
