Big Disc Upgrade

Tyres, exhausts, suspension, strut braces, air filters, brake pads/rotors and anything else for 'dawn raiders'.
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Brian H
Joined: Tue 16 Dec, 2008 19:55
Posts: 2505

  Z3 roadster 3.0i

Re: Big Disc Upgrade

Post by Brian H »

Rich,
Zedonist wrote:I have my eye on a complete set of 3.0 discs and calipers on ebay, but feel there is something else required?
As long as the calipers come with the mounting brackets that all you need, the mounting brackets accommodate the larger discs, I converted my 1.9 front brakes to 2.8 discs and calipers.

Image

This image shows the difference in the standard 1.9 caliper bracket (top) and the larger caliper bracket (bottom)
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Parts Needed
  • 2 x Discs
    1 x Set front brake pads
    2 x Calipers (NS & OS)
    2 x Caliper holders (NS & OS)
    1 x 1 ltr Brake fluid
siwilson
Joined: Fri 19 Jun, 2009 09:54
Posts: 790

  M roadster S54
Location: Horley

Re: Big Disc Upgrade

Post by siwilson »

Zedonist wrote:Thanks Brian,

Brilliant information take it is only a few bolts p,us bleeding?

Do I need to replace the steel guards at the back, are the 3.0 larger diameter?

Rich
RealOEM shows the same guard across all models.
2001 M roadster S54 Laguna Seca Blue
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Brian H
Joined: Tue 16 Dec, 2008 19:55
Posts: 2505

  Z3 roadster 3.0i

Re: Big Disc Upgrade

Post by Brian H »

siwilson wrote:
Zedonist wrote:Thanks Brian,

Brilliant information take it is only a few bolts p,us bleeding?

Do I need to replace the steel guards at the back, are the 3.0 larger diameter?

Rich
RealOEM shows the same guard across all models.
Yep, just used the same guards. The job is not too difficult, have a look at your brake hoses before you start, It is a good time to change if yours are showing signs of ageing.
Mike Fishwick
Joined: Fri 19 Jun, 2009 10:27
Posts: 2093

  Z3 roadster 2.8
Location: Daglan, France

Re: Big Disc Upgrade

Post by Mike Fishwick »

The 3 litre/ E46 brakes are 300 mm diameter, whic is onlyan increase in radius off 6mm, so the shields should be fine. Tt replace them requires that the hubs be removed, which generally damages the wheel bearings, so it is certainly not worth bothering to change the shields.
A Z3 is not just for Christmas - it's for life!
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g8jka
Z Register member
Joined: Sun 18 Apr, 2010 21:16
Posts: 1149

  Z3 roadster 2.8
Location: Telford

Re: Big Disc Upgrade

Post by g8jka »

I changed to the 3.0 litre (300mm) brakes from the standard 2.0 (286mm), calipers, shields and pads were all the same so I only had to change the carriers and the discs themselves.

You may need to change the calipers too as I think they are different between the 6cyl and 4cyl :?: :shrug
2000 BMW Z3 2.8 Titanium Silver Roadster with too many mods to list :-D :drive
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