E60 M5 brakes for E39 M5? - Page 4

Mposter · 19th August 2008, 00:26

Quote:

Originally Posted by palantirion

-Are they in any way designed to actually work with the M5's weight, load transfer, and brake bias? Or were they chosen simply because they work well on the Z06?

Whats there to design? The only aspect of the design is a single fraction. The ratio of moments generated by the brakes front/rear. And then you ensure the pedal travel and force are a decent compromise.

Here's a great XLS file from Race-Tech that'll help you accomplish your "brake design" needs.

palantirion · 19th August 2008, 00:28

Quote:

Originally Posted by Mposter

Any "front only" big brake kit will upset the brake bias. The main objective with massive brakes is consistency and fade resistance - not necessarily reduced stopping distances.

Swapping out the proportioning valve, or getting an adjustable one will alleviate this.

Four-wheel BBKs are a waste of money as the rear wheels do hardly any braking, so nearly any stock caliper is sufficient. In fact, the increased unsprung weight will possibly reduce overall performance of your car.

-You're right on the money except for two potential factors:
1) Some BBKs decrease unsprung weight even as they increase the size of components.

2) Some 4 wheel BBKs are significantly more useful than a comparative 2 wheel BBK. This is quite dependent on the vehicle in question and it's spring and longitudinal roll rates. Ideally, you would reduce load transfer to the front as much as possible and thus maximize all four contact patches instead of planting all the load on the front tires. If you can use more rear tire, then more rear brake helps. Stronger rear brakes, in some cases, can even help to reduce load transfer and also allow more control of the car's axis under braking (brake steering).

jfman · 28th March 2009, 13:48

Quote:

Originally Posted by THRILOS5

actually we machined the caliper mounts to fit the car so there are no brackets, adapters or anything like that, you just swap them with your stock ones and use longer bolts.
Im using them for over a year now without any single issue(sometimes I forget I have them) and the bracking performance has been stellar, also had a few board members test drive my car and they can contribute to that

ps
if you're using the stock 18" wheels you will need the 10mm spacers for these calipers to clear(didn't need them with my 18" OZ wheels)

Wow that is amazing. Can you tell us where and how much you machined the calipers?

Exorcist · 22nd August 2009, 23:03

Just saw these in ebay: BMW E60 M5 Bremsanlage Sattel ADAPTER auf E39 bei eBay.de: Bremsenteile (endet 12.09.09 17:10:53 MESZ)

Basically it's a complete adapter to mount the E60M5 calipers to E39 front axel. It's also in the ad that saddles/discs are available.
I still think they might be a great mod for those looking for options.

nightkrawler · 22nd August 2009, 23:46

the look rather odd with the stock rotor. the new pads seem to be only contacting a bit more than 50% of the rotor surface.