Suspension: Difference between revisions

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Created page with "Independent front and rear suspension is used, with Macpherson struts at the front and a 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> The front s..."
 
Move FAQ table to the top of the page
 
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Independent front and rear suspension is used, with [[Macpherson strut|Macpherson struts]] 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.
== Suspension FAQs ==
{| class="wikitable"
|-
! FAQ
! Covers
|-
| [[Subframe and Steering Reinforcement]]
| Steering-box bracket / subframe reinforcement
|-
| [[Steering]]
| Steering boxes and identification
|-
| [[Steering Knock When Turning]]
| Knock or clunk in the steering when turning
|-
| [[Ground Control Coilover Install]]
| Ground Control coilover install
|}


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" />
Independent front and rear suspension is used, with Macpherson struts at the front and a semi-trailing arm design for the rear.


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" />
The front suspension was upgraded to use dual links at the bottom of the strut, as first seen on the E23 7 Series. This increases steering offset while cornering, to improve steering feel. Double-acting shock absorbers, coil springs and a front anti-roll bar are used.


Wheel sizes are 14-inch (16-inch for the M5 model) or 390&nbsp;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&nbsp;mm positive rim offset.<ref name="BMW-E28-Betriebsanleitung" />
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. Some models have a rear anti-roll bar.
 
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.
 
Wheel sizes are 14-inch (16-inch for the M5 model) or 390mm Michelin TRX. All rims have 22&nbsp;mm positive rim offset.
 
== Front ==
 
== Steering ==
See [[Steering]].
* [[Subframe and Steering Reinforcement]]
* Power Steering Filter Change - [https://www.youtube.com/watch?v=_N2kfIh9wYI Youtube Video]
 
== Rear ==
 
[[Category:E28 Information]]

Latest revision as of 22:37, 13 August 2026


Suspension FAQs

FAQ Covers
Subframe and Steering Reinforcement Steering-box bracket / subframe reinforcement
Steering Steering boxes and identification
Steering Knock When Turning Knock or clunk in the steering when turning
Ground Control Coilover Install Ground Control coilover install

Independent front and rear suspension is used, with Macpherson struts at the front and a semi-trailing arm design for the rear.

The front suspension was upgraded to use dual links at the bottom of the strut, as first seen on the E23 7 Series. This increases steering offset while cornering, to improve steering feel. Double-acting shock absorbers, coil springs and a front anti-roll bar are used.

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. Some models have a rear anti-roll bar.

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.

Wheel sizes are 14-inch (16-inch for the M5 model) or 390mm Michelin TRX. All rims have 22 mm positive rim offset.

Front

Steering

See Steering.

Rear

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