Hi new to the site and new to the e30 market my first one.
car 1988 bmw E30 320i 4 door saloon
Im looking to change the rear drums to disks in the near future. ill buy parts needed and fit later so wanted to confirm a few things so if i see a good bargain online ill know what to grab.
My understanding from my research online is that all i will need to change is the rear trailing arms with disk hubs, calipers and brake hoses is this correct ?
If so then as my car is a 4 door saloon will it matter if the trailing arms are from a 2 door or does it have to be 4 door and same manufactured year needed or not?
will i need anything else or is it a straight swap job for the full conversion ?
If so a list of parts would be great and much appreciated thanks.
Rear brake drumbs to disks conversion info and help please
Moderator: martauto
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
You will also need the handbrake cables.
The trailing arms for discs come in two versions - those with provision for ABS and those without, but either will suit your application.
A set up from a two door saloon, a cab., or a touring will all be fine, although the brake calipers on a touring use a slightly bigger piston than the others. The difference is small, and it won't matter which you use, as long as it is a matching pair.
The trailing arms for discs come in two versions - those with provision for ABS and those without, but either will suit your application.
A set up from a two door saloon, a cab., or a touring will all be fine, although the brake calipers on a touring use a slightly bigger piston than the others. The difference is small, and it won't matter which you use, as long as it is a matching pair.
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Grrrmachine
- E30 Zone Wiki / Team Member

- Posts: 8043
- Joined: Sat Feb 09, 2008 11:00 pm
- Location: Warsaw, Poland
It can be a bit daunting getting used to these cars. Fortunately the Zone Wiki covers most of these things:
http://www.e30zone.net/e30zonewiki/inde ... conversion
http://www.e30zone.net/e30zonewiki/inde ... conversion
'89 325i Touring | Touring Resto Thread | In-Dash Screen install
Thanks Brian very helpfull info and Grrrmachine wicked link thanks very much exactly what i needed 
yea defor need to get used to the car but i will once i start taking it apart and replacing everything lol
yea defor need to get used to the car but i will once i start taking it apart and replacing everything lol
The Only Way Forward is Sideways

