Bigger Brake Options - Gen1 and 2 - Page 6 - North American Motoring



Tires, Wheels, & Brakes Discussion about wheels, tires, and brakes for the new MINI.
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Bigger Brake Options - Gen1 and 2

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  #126  
Old Today, 07:26 AM
cooper a cooper a is online now
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It would be a kind of miracle if you find some lug mount calipers which fit MINI steering knuckle. Even with brackets it's very hard since MINI steering knuckles have rather long lugs.
It's better to look at radial mount calipers with not excessive piston area (different limit for R56 and R53).
Some suitable Brembo calipers are:
- front Porsche 911 4 pot of different generations
- front Cayman/Boxster 4 pot
- FIAT 500/Punto Abarth
- Alfa Romeo MITO
- Renault Clio RS 3/ Megane RS 2
- Opel Corsa OPC
- Renault Megane RS 3
- BMW 135 6 pot
- Alfa Romeo Giulietta GTA
- Alfa Romeo 156/147 GTA 330x32
- Seat Leon Mk1/Peugeot 208/Citroen DS3 Racing
All these calipers have piston area equivalent to not more than 57mm diameter single piston.
All these calipers make sence only in conjunction with corresponding brake discs.

Last edited by cooper a; Today at 07:44 AM.
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  #127  
Old Today, 07:52 AM
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The Gen1 non JCW caliper piston is 48 mm (2.8 square inches) whereas the JCW and the Gen2 non JCW piston is 54 (3.5 square inches). The Gen2 JCW piston area is approximately 3.5 square inches. IMO as the Gen1 master cylinder has no issues with handling the 3.5 value of the single 54 mm piston with the 3.5 square inch surface area, it should not have an issue with the 4 piston Gen2 JCW design with the same piston area.

Porsche, BMW and the Fiat calipers should be available in the states but would think the others would be much harder to locate unless you were on the other side of the pond. Cooper_a, are you able to come up with any Brembo documents that have the part numbers? It appears the MINI/Cobalt calipers are a Family E type model.
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  #128  
Old Today, 08:10 AM
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R53 and R56 also have different rear pistons. R53 - 34mm, R56 - 36mm.

Unfortunately I don't have any Brembo caliper documents, just some knowledge and experience.
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  #129  
Old Today, 08:16 AM
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I highly doubt Brembo or BMW made public any drawings for these OE Brembo brakes. It is the same that you cannot find any semblance of drawing on OE parts. You can find "drawings" for aftermarket kits as they are there for fitment checks for the potential sales.

You have to find a real life sample and do the hard work and measure trial and error. A junkyard is in the best position to do this without having to invest in the lottery.
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