CtS-V brembo calipers on e39 anyone??? - Page 2 - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

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post #11 of 19 Old 8th March 2019, 04:28 AM
boris1
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Just wanted to revive and old thread and see if anyone successfully fitted CTS-V calipers to e39m5
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post #12 of 19 Old 28th May 2019, 01:36 AM
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Originally Posted by boris1 View Post
Just wanted to revive and old thread and see if anyone successfully fitted CTS-V calipers to e39m5

IMO: No. The M5 calipers mounting "legs" are 2 different lengths where these are equal length... So one end will look great but the other end will hit the rotor. AND, there is no room on the knuckle to configure a adapter bracket for this type of mounting legs.



What I have not determined is if the optional E38 (7-series) Brembo 4-piston front calipers will fit. I don't think they are staggered legs
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post #13 of 19 Old 28th May 2019, 06:21 AM
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The e38 had optional brembo brakes? Which model specifically? I looked at the 750i, which is the heaviest and most powerful and I all I see are twin piston sliding calipers. Even if fixed caliper brembos were available on the e38, they would be incredibly difficult to find because I've never seen them.
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post #14 of 19 Old 28th May 2019, 06:32 AM
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Quote:
Originally Posted by boris1 View Post
The e38 had optional brembo brakes? Which model specifically? I looked at the 750i, which is the heaviest and most powerful and I all I see are twin piston sliding calipers. Even if fixed caliper brembos were available on the e38, they would be incredibly difficult to find because I've never seen them.

All I got:



RealOEM.com - Online BMW Parts Catalog


https://www.bimmerforums.com/forum/s...rade-Revisited
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post #15 of 19 Old 28th May 2019, 06:51 AM
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Wow, of all things they put it into the 728i, but not the more powerful e38 versions like 740i and 750i. This doesn't make sense, but I guess that is what they did. A quick look at the rotors suggests that even if you can get the calipers, this is not a good option. Specifically, the 728i uses 316x28 rotors while our e39m5 has 345x32 rotors. So the diameter may be a problem, but even if that is solved, the new pads likely won't fit in since our rotor is too thick. I don't think that this e38 to e39m5 brake swap is worth pursuing.
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post #16 of 19 Old 28th May 2019, 07:28 AM
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Quote:
Originally Posted by boris1 View Post
Wow, of all things they put it into the 728i, but not the more powerful e38 versions like 740i and 750i. This doesn't make sense, but I guess that is what they did. A quick look at the rotors suggests that even if you can get the calipers, this is not a good option. Specifically, the 728i uses 316x28 rotors while our e39m5 has 345x32 rotors. So the diameter may be a problem, but even if that is solved, the new pads likely won't fit in since our rotor is too thick. I don't think that this e38 to e39m5 brake swap is worth pursuing.

Had not thought about Alpina B10 calipers before but Plan Z ??


Alpina B10 V8S Bremsanlage Brembo 4 Kolben Bremssättel 360x34mm schwimmend gelagerte Scheiben 4-piston calipers rotors 360mm - speedworxs.de


Using "radial" attached type calipers seem to be the only practical way to be able to make a adapter bracket to fit in the space available.


Link has some good photos of the issues and solution. Think these could work with the 345mm M5 rotor even if intended for 360... Most say a 355mm rotor is as big as you can go and still use the Style 65 18" wheels. Just speculating.



Text translate to:
"Rinal Alpina B10 V8S Brake System Front Axle,
consisting of:
2x calipers Brembo 4 pistons
2x brake discs 360x34mm original Alpina 500km used
Brake pads original Alpina 500km

Adapter for brake calipers and brake hoses

So everything that is needed to rebuild an E39"
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post #17 of 19 Old 31st May 2019, 03:03 AM
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No thanks. The e39 is becoming a classic, some would say it already is. If you're gonna modify the car keep all the original
parts so you can put it back in case you want to sell
it. I'm keeping mine intact. If you think the brakes aren't good enough, work on your foot strength!
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post #18 of 19 Old 31st May 2019, 02:21 PM
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Unless you get exceedingly lucky, or actually do the math, most of the time swapping calipers at random with another car is a downgrade in stopping distances (regardless of size, number of pistons, etc).

Guide to doing the math here, unless you are just after the bling and don't care about making your car worse:
How to Calculate Brake Bias - BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)
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post #19 of 19 Old 4th June 2019, 06:05 AM
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Quote:
Originally Posted by Obioban View Post
Unless you get exceedingly lucky, or actually do the math, most of the time swapping calipers at random with another car is a downgrade in stopping distances (regardless of size, number of pistons, etc).

Guide to doing the math here, unless you are just after the bling and don't care about making your car worse:
How to Calculate Brake Bias - BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)



thank you for the very useful link

No Smart Moves
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