BMW 7 Series (E32)

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BMW 7-Series (E32)
BMW E32 Front.jpg
Overview
Manufacturer BMW
Production 1986–1995
311,068 built[1][2]
Assembly Dingolfing, Germany[3]
Designer Ercole Spada; Hans Kerschbaum (1983)[4]
Body and chassis
Class Full-size luxury car
Body style 4-door saloon (sedan)
Layout FR layout
Related BMW E34
BMW E31
Powertrain
Engine Petrol:
3.0-3.4 L six-cylinder BMW M30
3.0-4.0 L V8 BMW M60
5.0 L V12 BMW M70
Transmission Automatic
4-speed
5-speed
Manual
5-speed
Dimensions
Wheelbase 2,833 mm (111.5 in)[5]
2,947 mm (116.0 in) (long)
Length 4,910 mm (193 in)
5,029 mm (198.0 in) (long)
Width 1,845 mm (72.6 in)
Height 1,400 mm (55 in)
1,435 mm (56.5 in) (long)
Curb weight 1,720 kg (3,790 lb)
1,930 kg (4,250 lb) (long)[6]
Chronology
Predecessor BMW E23
Successor BMW E38

After almost 7 years in development since September 1979, in July 1986,[7] BMW introduced the second generation of the 7 series, known internally as the E32. Aimed at the high end of the luxury market, the car offered some of the latest innovations in automotive technology, and (beginning in 1987) a new, top-of-the-line V12 engine. Some luxury options featured on the E32 included integrated telephone and fax machines, a wine cooler, double glazing, traction control system, and a system that automatically increased spring pressure on the windscreen wipers, to keep them firmly pressed on the glass at Motorway speeds. The E32 (750i) was the first car adhering to BMW's self-imposed speed limit of 250 km/h (155.37 mph).

The car was also available in a stretched version (indicated by an 'L' from German Lang, after the model number), in which case an extra 11.4 centimetres (4.5 in) of leg room was available to the rear passengers by stretching the rear doors, and the body at this point.

The styling is credited to then-chief stylist Ercole Spada and Hans Kerschbaum working under the guidance of then-chief designer Claus Luthe.[8][9] Design work began in late 1979, in which by 1983 1:1 scale models were presented and frozen in 1984 for 1986 production.[10]

Production of the BMW E32 series concluded in 1995 with a total of 311,068 units built.

Notable versions[edit]

750iL Highline[edit]

The BMW 750iL Highline was the top-of-the-line model of the E32, with lots of added luxury for the rear passengers like full leather, dual radio controls, dual climate control with coolbox mounted in the center console, electrically heated and adjustable rear seats, walnut veneer folding tables, two crystal glasses neatly placed in the coolbox, legrests, and sun shade all around the rear/side windows. Complete with independent heating and ventilation, it also added a second battery in the trunk and a second alternator to provide power for all these luxuries. The 'Highline' option package cost more than 20,000 DEM (€10,000 equivalent), and was only available on the 750iL, bringing the total price to well over twice that of a 'basic' 730i ('basic' to be taken in context).[11]

767iL Goldfish prototype[edit]

Main article: BMW Goldfish V16

The 767iL Goldfish was a single prototype of E32 car powered with V16 engine. It was conceived in 1987 and built by the end of 1988. Because of the length of the engine cooling system (radiator) was moved to the trunk and additional vents were added at the rear.[12]

Alpina models[edit]

German tuning company Alpina was manufacturing 3 main models based on the E32 series cars. Those were B11 3.5 (3 engine versions), B11 4.0 and B12 5.0. In addition to tuned engines and suspension they were distinguishable by bodykit, pinstriping and trademark Alpina wheels.[13]

Powertrain[edit]

The E32 7-series cars were offered with 5 gasoline engines.

At the car's introduction, the 730 and 735 used the straight-6 M30 engine, while the 750 featured the all-new M70 V12 engine which produced 300 bhp (224 kW; 304 PS).

In 1992, a new 32-valve V8 engine was introduced, the M60. The 730i got this engine in a 3-liter version, while the new 740i got the 4-liter version. Both versions were coupled to a new, 5-speed automatic transmission made by ZF.

In some countries (notably in the USA and UK), there were problems with the M60 engine because of excessive sulfur amount in gasoline, causing corrosion problems in its Nikasil cylinder block. The cylinder lining would quickly wear, causing the engine to lose compression, which caused rough idling and eventually the engine would fail to start. Engines were replaced under warranty; the problem was corrected by using a different material, Alusil.[14] In the USA and UK sulfur rich fuel is being phased out.[15][16] Nikasil engines are unlikely to be a problem today, as cars with affected engines are off the road or have received replacement engines.[17]

Externally, the BMW 'kidney' grille indicated which engine was present under the hood: all 6-cylinder models had a narrow grille, and all 8- and 12-cylinder models had the wider version. This feature was not seen on later models (the E38 used a wide grille for all models). The narrow grille was available as an option on the 8- and 12-cylinder E32 models.

BMW E32 735i (note narrow grille)
BMW E32 740i (note wide grille)

The 740i speed was electronically limited at 240 km/h (149 mph) to distinguish it from the flagship vehicle 750i. The 740i E38 which used the same engine as 740i E32 had speed limited to 250 km/h (155 mph).

Engines specifications and performance[edit]

Model Engine Code Power Torque 0–100 km/h (s) Top Speed (km/h) Years made
730i[5] M30B30 I6 188 PS (138 kW; 185 hp) @5800 188แรงม้า 260 N·m (190 lb·ft) @4000 10.6 (AT)
9.3 (MT)
223 (MT) 1986–1994
735i[18] M30B35 I6 211 PS (155 kW; 208 hp) @5700 305 N·m (225 lb·ft) @4000 9.1 (AT)
8.3 (MT)
228 (AT)
231 (MT)
1986–1992
730i V8[19] M60B30 V8 218 PS (160 kW; 215 hp) @5800 290 N·m (210 lb·ft) @4500 9.3 (AT)
233 1992–1994
740i[20] M60B40 V8 286 PS (210 kW; 282 hp) @5800 400 N·m (300 lb·ft) @4500 7.4 240* 1992–1994
750i[6] M70B50 V12 300 PS (220 kW; 300 hp) @5200 450 N·m (330 lb·ft) @4100 7.4 250* 1987–1994 (USA)
1986–1994 (Europe)
* = electronically limited         Performance figures may differ for long models and gearing

Transmissions specifications[edit]

BMW M30 I6 engine
BMW M70 V12 engine
[21] 730i

I6

735i

I6

730i

V8

740i

V8

750i

V12

Speed (gear) ratios
Manual Getrag 260 Getrag 260 ZF S5D 310Z
1 3,83 3,83 4,20
2 2,20 2,20 2,49
3 1,40 1,40 1,66
4 1,00 1,00 1,24
5 0,81 0,81 1,00
Reverse 3,46 3,46 3,89
Automatic ZF 4HP22 ZF 4HP22 ZF 5HP18 ZF 5HP30 ZF 4HP24
1 2,48 2,48 3,67 3,55 2,48
2 1,48 1,48 2,00 2,24 1,48
3 1,00 1,00 1,41 1,54 1,00
4 0,73 0,73 1,00 1,00 0,73
5 0,74 0,79
Reverse 2,09 2,09 4,10 3,68 2,09
Fluid capacity (L)
Manual 1,25 1,25 1,25
Automatic 3,0 3,0 3,0 3,5
Rear axle 1,7 1,9 1,7 1,9 1,9

Related cars[edit]

The E34 5 series, introduced in 1988, has design cues similar to the E32, and some engines and other parts are shared between the two cars.

The E31 8 series features some of the same engines as the E32: M60 V8 and M70 V12.

References[edit]

  1. ^ Oswald, Werner (1. Auflage 2001). Deutsche Autos 1945–1990, Band 4. Stuttgart: Motorbuch Verlag. ISBN 3-613-02131-5. 
  2. ^ Kittler, Eberhard (1. Auflage 2001). Deutsche Autos seit 1990, Band 5. Stuttgart: Motorbuch Verlag. ISBN 3-613-02128-5. 
  3. ^ "Vehicle manufacturer profiles". Automotive World. Retrieved 2011-09-24. 
  4. ^ http://translate.google.com/translate?hl=en&sl=de&u=http://www.kulturgut-mobilitaet.de/aktuell/hist-mobilitaet/95-hommage-an-claus-luthe&prev=/search%3Fq%3De32%2Bbmw%2Bclaus%2Bluthe%2B1983%26start%3D20%26sa%3DN%26biw%3D1600%26bih%3D756
  5. ^ a b "BMW E32 730 @ carfolio". Carfolio.com. 2008-04-03. Retrieved 2011-09-24. 
  6. ^ a b "BMW E32 750 @ carfolio". Carfolio.com. 2008-04-03. Retrieved 2011-09-24. 
  7. ^ shogun. "E32 7 series series buying guide". Bimmerboard.com. Retrieved 2009-09-26. 
  8. ^ "BMW Car Designers". Retrieved 26 July 2012. 
  9. ^ "Ercole Spada". Retrieved 26 July 2012. 
  10. ^ http://www.carscoops.com/2013/09/bmw-remembers-second-generation-7.html
  11. ^ "BMW 7er, Modell E32, Sonder-Ausstattungsdetails inkl. Preisen". www.7-forum.com. 2006-06-03. Retrieved 2009-09-26. 
  12. ^ "BMWCar - V16 E32". BMWCar. March 2009. 
  13. ^ "Alpina official webpage". Alpina-automobiles.com. 2009-05-15. Archived from the original on 6 December 2010. Retrieved 2010-11-06. 
  14. ^ "BMW World - Nikasil". Usautoparts.net. Retrieved 2010-11-06. 
  15. ^ "Tier 2 Vehicle & Gasoline Sulfur Program | US EPA". Epa.gov. Archived from the original on 26 October 2010. Retrieved 2010-11-06. 
  16. ^ Published: 12:00AM GMT 11 Nov 2000 Comments (2000-11-11). "No fuel like a low-sulphur fuel". Telegraph. Retrieved 2010-11-06. 
  17. ^ "THE BMW V8 NIKASIL MYTH". Meeknet.co.uk. Retrieved 2010-11-06. 
  18. ^ "BMW E32 735 @ carfolio". Carfolio.com. 2008-04-03. Retrieved 2010-11-06. 
  19. ^ "BMW E32 730 V8 @ carfolio". Carfolio.com. 2008-04-03. Retrieved 2010-11-06. 
  20. ^ "BMW E32 740 @ carfolio". Carfolio.com. 2008-04-03. Retrieved 2010-11-06. 
  21. ^ "BMW E 32 hjemmeside". Home.online.no. Retrieved 2010-11-06. 

External links[edit]