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Z4M brake calipers

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MikeMcG
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Z4M brake calipers

Post by MikeMcG » Thu Sep 19, 2019 5:05 pm

Hi
I bought a full set of second hand brake calipers years back with the intention of having them refurbished and put on my Z4MR.
One of those jobs I never got around to and having just sold the Z4M, sadly never will now.
I was told at the time that they were off a crashed E86 Z4MC.
Does anyone know how I can tell 100% before listing them for sale whether they are definitely Z4M?
I don’t want to rip anyone off selling what I think are Z4M that turn out to be normal M3.
I think the rears are the same as the M3 anyway, but could do with confirming the fronts.

Many thanks
Mike
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bmwaddict
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Z4M brake calipers

Post by bmwaddict » Thu Sep 19, 2019 5:11 pm

I believe its the rears that are different to an M3 rather than the fronts from memory but I may be wrong, you can check original part numbers on realoem.com.
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Z4M brake calipers

Post by srhutch » Thu Sep 19, 2019 6:32 pm

I think the fronts are the same also, but as above check the numbers on realoem.com
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Truth
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Z4M brake calipers

Post by Truth » Fri Sep 20, 2019 2:24 pm

If they are Z4m ones would you be willing to sell the front carriers?
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MikeMcG
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Z4M brake calipers

Post by MikeMcG » Fri Sep 20, 2019 3:21 pm

Yes happy to sell once I can be 100% sure what they are. Only collecting dust in the shed currently. I’m away for a few days but will look into it as soon as I’m back.

mikem7709
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Z4M brake calipers

Post by mikem7709 » Fri Sep 20, 2019 6:54 pm

Only difference between M3 and Z4M is the front carriers are longer to Accomodate the larger CSL sized discs.

CSL callipers are Silver, Z4M Black.

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buzyg
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Z4M brake calipers

Post by buzyg » Fri Sep 20, 2019 8:45 pm

mikem7709 wrote: Fri Sep 20, 2019 6:54 pm Only difference between M3 and Z4M is the front carriers are longer to Accomodate the larger CSL sized discs.

CSL callipers are Silver, Z4M Black.
As above. I actually bought CSL calipers and painted them Black, when I replaced mine. For some reason they were cheaper. :D
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MrPT
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Z4M brake calipers

Post by MrPT » Fri Sep 20, 2019 9:13 pm

That’s not quite right. E46 M3 has a 42mm rear piston area. It’s only the CSL that has the matching 46mm rear piston.

Fronts have the same piston area (60mm) but different carriers.
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Z4M brake calipers

Post by Truth » Fri Sep 27, 2019 9:49 am

MikeMcG wrote: Fri Sep 20, 2019 3:21 pm Yes happy to sell once I can be 100% sure what they are. Only collecting dust in the shed currently. I’m away for a few days but will look into it as soon as I’m back.
Brill cheers mate. Let me know
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Z4M brake calipers

Post by Truth » Fri Oct 04, 2019 11:02 pm

MikeMcG wrote: Fri Sep 20, 2019 3:21 pm Yes happy to sell once I can be 100% sure what they are. Only collecting dust in the shed currently. I’m away for a few days but will look into it as soon as I’m back.
Have u had a look into them. Willing to take pics of my spares to see if they match
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Simon 3.2M
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Z4M brake calipers

Post by Simon 3.2M » Mon Oct 07, 2019 1:25 pm

I’m changing the colour of mine so if anyone had a set I could refurb so I can swap them straight over, I’d be interested in them.
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Truth
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Z4M brake calipers

Post by Truth » Mon Oct 07, 2019 5:58 pm

I’ve a set but need to get some front carriers my calipers have been refurbed and just need the carriers to match then I’ll have a full spare set.
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Z4M brake calipers

Post by mgrlane » Mon Oct 07, 2019 6:59 pm

Truth wrote: Mon Oct 07, 2019 5:58 pm I’ve a set but need to get some front carriers my calipers have been refurbed and just need the carriers to match then I’ll have a full spare set.
Hi Truth,

Can I ask. Did you paint them yourself? If so what did you use?

It's on my list of things to do but I have watched a few people do theirs on YouTube with mixed results.

Mike

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Z4M brake calipers

Post by Truth » Tue Oct 08, 2019 8:34 am

mgrlane wrote: Mon Oct 07, 2019 6:59 pm
Truth wrote: Mon Oct 07, 2019 5:58 pm I’ve a set but need to get some front carriers my calipers have been refurbed and just need the carriers to match then I’ll have a full spare set.
Hi Truth,

Can I ask. Did you paint them yourself? If so what did you use?

It's on my list of things to do but I have watched a few people do theirs on YouTube with mixed results.

Mike
No sent them off to BiggRed they recon and refurb loads of colours to choose from. And the coating lasts and looks great. Just need to get the carriers done now!
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Z4M brake calipers

Post by TomK » Tue Oct 08, 2019 9:43 pm

MikeMcG wrote: Thu Sep 19, 2019 5:05 pm
Does anyone know how I can tell 100% before listing them for sale whether they are definitely Z4M?
I'd say they are definitely Z4M/CSL calipers and carriers. As already pointed out the front caliper is identical to a standard M3 but the carrier is different (to allow the 345mm CSL disc). The rear caliper is also different to the regular M3 setup with a slightly larger piston area.
It's worth pointing out therefore that the front calipers are not worth much but the carriers for them go for generally minimum £150 upwards on the M3 forums. The rear calipers are also worth quite a bit, I'd say at least £100 or so.
Here's the calipers off my z4m, markings on them look to be the same as yours and different to boggo m3 rears that I've googled.
https://photos.app.goo.gl/wJSCpiJ5hS58YN9q7
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