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| === [[Engines]] === | | === [[Engines]] === |
| Drivetrain
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| Suspension
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| Brakes
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| M5
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| Production
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| == Drivetrain == | | === [[Production]] === |
| BMW offered the E28 with both manual and automatic gearboxes. The torque is transmitted from the engine with a single-disc dry clutch with a torsional damper in the models with a manual gearbox, the automatic models have a torque converter with built in lockup-clutch.<ref name="BMW-E28-Betriebsanleitung" />
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| ;Manual transmissions
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| The 5-speed manual transmissions are:<ref>{{cite web|title=5' E28 model selection|url=http://www.realoem.com/bmw/en/select?product=P&archive=1&series=E28&body=Lim|website=www.realoem.com}}</ref>
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| * [[Getrag]] 242 (for M10 and M20 engine models)
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| * Getrag 262 (M30 engines)
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| The 5-speed manual transmissions are:
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| * Getrag 240 (M10 and M21 engines)
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| * Getrag 245 (M10 engines)
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| * [[Getrag 260 transmission|Getrag 260]] (M20, M21 and M30 engines)
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| * Getrag 265 (M30 engines and 525e/528e)
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| * Getrag 280 (M88/3 and S38 engines)
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| * [[List of ZF transmissions|ZF]] S5-16 (M20 engines)
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| ;Automatic transmissions
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| The 3-speed automatic transmissions are:
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| * [[ZF 3HP22 transmission|ZF 3HP22]] (M20 and M30 engines, US market only)
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| The 4-speed automatic transmissions are:
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| * [[ZF 4HP22 transmission|ZF 4HP22]] (M10, M20, M21)
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| * [[ZF 4HP22 transmission|ZF 4HP22]] EH (M20, M30)
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| == Suspension ==
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| Independent front and rear suspension is used, with [[Macpherson strut]]s at the front and a [[trailing arm#Semi-trailing arm|semi-trailing arm]] design for the rear.<ref name="BMW-E28-Betriebsanleitung">{{citation|publisher=BMW AG |title=Betriebsanleitung, Serviceheft 518, 520i, 525e, 525i, 528i, 535i, M535i, 524td |date=1985 |language=de |url=https://bmw-grouparchiv.de/research/detail/index.xhtml?id=3058985 |access-date=20 February 2017}}</ref>
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| The front suspension was upgraded to use dual links at the bottom of the strut, as first seen on the [[BMW 7 Series (E23)|E23 7 Series]]. This increases steering offset while cornering, to improve steering feel.<ref name="noakes">{{cite book|last1=Noakes|first1=Andrew|title=The Ultimate History of BMW|date=2008}}</ref>{{refpage|page=106}} Double-acting shock absorbers, coil springs and a front [[anti-roll bar]] are used.
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| The rear suspension is mounted on a delta beam that is connected to the body with three screws in rubber bearings, that have longitudinal play.{{citation needed|date=November 2017}} Some models have a rear anti-roll bar.<ref name="BMW-E28-Betriebsanleitung" />
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| The steering on most models is a speed-dependent [[recirculating ball]] power steering system made by ZF Friedrichshafen. The 518i has a Gemmer steering system with a double enveloping worm gear, also made by ZF.<ref name="BMW-E28-Betriebsanleitung" />
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| Wheel sizes are 14-inch (16-inch for the M5 model) or 390 mm [[Michelin TRX]].<ref>{{cite book|last1=Taylor|first1=James|title=BMW M5- The Complete Story|date=2015}}</ref>{{refpage|page=44}}<ref>{{cite web|title=1981 BMW E28 5 Series 525i Specs|url=http://www.ultimatespecs.com/car-specs/BMW/230/BMW-E28-5-Series-525i.html|website=www.ultimatespecs.com|access-date=21 November 2017}}</ref><ref>{{cite web|title=1984 BMW E28 5 Series 535i Specs|url=http://www.ultimatespecs.com/car-specs/BMW/1409/BMW-E28-5-Series-535i.html|website=www.ultimatespecs.com|access-date=21 November 2017}}</ref> All rims have 22 mm positive rim offset.<ref name="BMW-E28-Betriebsanleitung" />
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| == Brakes ==
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| The brakes use a hydraulic dual-circuit brake system with power assistance. The front wheels have disc brakes, that are – except for the 518i<!--518 and 524d as well?--> – internally ventilated. All models with 2.5 L or more displacement have rear disc brakes (non-vented), while the lesser powered models have rear drum brakes. To prevent the wheels from locking, BMW equipped the E28 after 1984 with an [[anti-lock braking system]], although it was an option in some markets.<ref name="BMW-E28-Betriebsanleitung" />
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| == M5 model ==
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| [[File:BMW M5 E28 Minervablau.jpg|thumb|right|M5 model]]
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| {{main|BMW M5#E28 M5 (1984–1988)}}
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| The E28 was the first M5 model produced, and is powered by the [[BMW M88|M88/3]] and [[BMW S38|S38]] straight-six engines.
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| {{clear right}}
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| == North American market models ==
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| [[File:BMW-535is.jpg|thumb|right|BMW 535is (North America)]]
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| [[File:M5sig (E28).jpg|thumb|North American M5 fitted with European market headlights]] | |
| The North American line-up consisted of the '''528e''' (1982–1988, known as the 525e in Europe), '''533i''' (1983–1984), '''535i''' (1985–1988), '''524td''' (1985–1986), '''M5''' (1986–1987) and '''535is''' (1987–1988).
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| The launch model was the 528e in 1982, followed by the 533i.<ref>{{cite web|title=1984 BMW 533i E28 Specifications|url=http://www.carfolio.com/specifications/models/car/?car=227689|website=www.carfolio.com|access-date=22 November 2017}}</ref> The optional automatic transmission was initially a 3-speed (a 4-speed automatic was available in Europe at the time), with a 4-speed automatic transmission becoming optional in 1983. From 1985, all North American models had ABS Brakes as standard.
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| The North American E28 models had larger bumpers (designed to withstand a {{convert|5|mph|abbr=on}} collision without body damage), which increased the overall length by {{convert|180|mm|in|1|abbr=on}}.{{citation needed|date=May 2019}}
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| The 528i, 533i and 535i were sold with a [[catalytic converter]] in the United States.
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| Instead of importing the M535i, BMW of North America created the 535is.<ref>{{cite web|title=1985 BMW E28 5 Series 535is (US) Specs|url=http://www.ultimatespecs.com/car-specs/BMW/1413/BMW-E28-5-Series-535is-(US).html|website=www.ultimatespecs.com|access-date=22 November 2017}}</ref> This model is based on a 535i, plus front and rear spoilers, sport suspension and sport seats.
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| Production of North American market M5 models began in late 1986 (two years after M5 production began for European markets), and it was only produced for twelve months as 1988 [[model year]] car.<ref>{{cite web|title=1988 BMW M5 values|url=https://www.hagerty.com/apps/ValuationTools/1988-BMW-M5|website=www.hagerty.com|access-date=24 October 2017}}</ref> North American M5 models use the S38 engine instead of the M88/3.<ref>{{cite book|last1=Taylor|first1=James|title=BMW M5 - The Complete Story|date=2015|isbn=978-1-78500-045-4}}</ref>{{refpage|page=37}} All North American M5 cars were painted Jet Black and most interiors were tan ("Natur") coloured leather.<ref>{{cite web|title=FAQ E28 M5|url=https://www.bmwmregistry.com/model_faq.php?id=7|website=www.bmwmregistry.com|access-date=24 October 2017}}</ref> | |
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| == Production ==
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| E28 production started in July 1981 and ended in December 1987.<ref>{{cite book|last1=Taylor|first1=James|title=BMW M5: The Complete Story|date=February 2016|publisher=The Crowood Press UK|location=Ramsbury, Marlborough Wiltshire|isbn=978-1785000461|url=https://books.google.com/books?isbn=1785000462|access-date=20 March 2017}}</ref> A total of 722,328 cars were built.<ref name=DeAutos45bis90Oswald>{{cite book |last=Oswald |first=Werner |title= Deutsche Autos 1945–1990, Band 4, 1. Auflage|year=2001 |publisher=Motorbuch Verlag |location=Stuttgart |isbn=3-613-02131-5}}</ref>
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| The E28 was still sold in North America as a 1988 Model Year car after its E34 successor had been released in Europe in early 1988. A limited edition model was also sold in South Africa from mid-1987 to the end of 1988.<ref>{{cite web|title=M5 E28|url=http://www.africanmusclecars.com/index.php/bmw/m5-e28|website=www.africanmusclecars.com|access-date=16 December 2013}}</ref>
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The BMW E28 is the second generation of BMW 5 Series executive cars, which was produced from 1981 to 1988 and replaced the E12 5 Series. Pre-series production began in April 1981 and the car was introduced in the autumn that year.
The E28 was initially produced with straight-four and straight-six petrol engines until 1983, when the 524td model became the first BMW car to be powered by a diesel engine. It was also the first 5 Series with the center console angled towards the driver and to be available with anti-lock brakes (ABS).
The first BMW M5 was produced during the E28 generation. It was powered by the M88/3 and S38 straight-six engines. The E24 6 Series coupés were built on the E28 platform from 1982 to 1989.
The E28 was replaced by the E34 5 Series in 1988.
