How-to: Cheap brake upgrade

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Panta Rhei
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How-to: Cheap brake upgrade

Post by Panta Rhei » Sun May 17, 2020 2:42 pm

BTZ461 wrote: Sun May 17, 2020 10:09 am Doing this atm. Five week lock down finished, so moving on. Z4M front discs paired with 335i calipers, for the rear OE race drilled discs but retaining the original calipers and handbrake pads. Using 335i sensors to the front with low dust pads (front and rear).
Amazing!
I have 2 questions:
braking lines stay as the are? I have 3.0si 2007
and as you said I also need, apart from M3 CSL discs and 335 calipers, brake pads sensors from 335i?

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Panta Rhei
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How-to: Cheap brake upgrade

Post by Panta Rhei » Thu May 28, 2020 8:20 am

Any news on your brakes swap?

CHUCKNADO
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How-to: Cheap brake upgrade

Post by CHUCKNADO » Wed Jul 22, 2020 12:24 am

Hello all. As this 11 year old thread is still going I thought if add my 2 pence worth. :!: :D

I have bought an e46 hub to size up disces for the brembos off an F series bmw. Cailpers bolt up fine of course but finding discs was always the issue.

However i may have come across a cheaper option that the csl discs ( £350 odd, the last time i checked ) by using ones off of a Vauxhall Insignia. They are 30mm thick and 338mm in diameter. That is only 2mm off the discs designed for the calipern on the F Series. 2 things you need to do to get that to work...
1 enlarge the centrebore to 79mm
2 space the caliper out about 2mm with washers.

It does appear that you don't need to cut the pad down but i have not tested this yet.

For rears I'll be looking at the 330 calipers and carriers and either e88/82 135i discs at 324mm which have a height of 77mm or the 320mm ones from the x3 but they have a hight of 79mm which may be too much

The park brake: in another forum I have seen either some kind of lining i side the disc... or... cutting the shoe off and welding a 330i shoe onto the base of the original. This was for an e36 but the principle is the same.

Ill update accordingly

Many thanks
C
Edit: apologies to anyone who read that and could not make any sense from it... Ive now run it thru the spell checker.
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BTZ461
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How-to: Cheap brake upgrade

Post by BTZ461 » Sun Nov 22, 2020 10:41 am

CHUCKNADO wrote: Wed Jul 22, 2020 12:24 am I have bought an e46 hub to size up disces for the brembos off an F series bmw. Cailpers bolt up fine of course but finding discs was always the issue.
My conversion see previous pages has stalled 'cos life in the way. However the chance to purchase front and rear Brembo calipers (Blue) from F30 2013 excite me again, Have CSL Z4M discs 345x28, will this work at the front with the brembo as a straight bolt on kit? and what disc etc do we need to make the brembo caliper work at the back? Aware of the difficulties etc with the handbrake, don't mind reasonable cost to make it work. All advice taken on board, thanks for reading Bill

BTZ461
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How-to: Cheap brake upgrade

Post by BTZ461 » Sun Nov 22, 2020 10:43 am

Panta Rhei wrote: Thu May 28, 2020 8:20 am Any news on your brakes swap
Life gets in the way Panda Rhei, getting excited again, read below.

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Panta Rhei
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How-to: Cheap brake upgrade

Post by Panta Rhei » Sun Nov 22, 2020 11:11 am

I will stay with 335i calipers + Z4M front rotors. No need for enlarging the centrebore or spacing the caliper out by 2 mm.
:D

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Jembo
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How-to: Cheap brake upgrade

Post by Jembo » Sun Nov 22, 2020 12:04 pm

Love seeing this thread revived... helped me immensely with my old 3.0 :thumbsup:
Joined the dark side with a ///M Hell Bronze Sepang Coupe :happyclap:
Ex Aug 2005 Maldives Blue 3 litre cruizer, lots of toyz,

Lifer 54

BTZ461
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How-to: Cheap brake upgrade

Post by BTZ461 » Sun Nov 22, 2020 5:37 pm

Thank you guys. It may be yet another rabbit hole that perhaps is not worth thinking about :lol: Life is already complicated enough. But they are a handsome caliper, and would look good behind the Arc8 rims. Wait, maybe the new koni shocks (also waiting to be fitted) may cause a colourway clash?
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rays545i
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How-to: Cheap brake upgrade

Post by rays545i » Sat Nov 28, 2020 1:43 pm

Hi
Been reading this thread very interesting
Just to confirm
I have 2.2
So 286mm vented front
280mm solid rear

For me to upgrade to
300mm vented fronts
294mm vented rear

I would need
Front carriers only
Rear carriers and callipers

That’s the same setup as 2.5si and 3.0

Thanks

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