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Brake hypothetical: Can I install Evo X's front calipers to the rear?
Many enthusiasts and forum members install aftermarket front calipers and then cheaply sell the OEM front calipers. I feel this might not be the most efficient way to play. So have anyone tried to fit the OEM Evo X front calipers to the rear? These calipers do appear to have similar mounting brackets from this picture:
The rotors are different sizes, the pads from the front would only partially clamp onto the rear rotor. The mounting position is likely not the same either, in terms of the rotor offset to the hub.
Also the fit would not be the only problem. You would also be adding calipers to the rear with a much greater volume of fluid needed to activate. I think you would run into proportioning problems, the master cylinder only moves so much fluid and the rear gets a smaller amount. So you may in fact get a smaller clamping force in the rear by putting a larger caliper on. You would probably need to upgrade the master cylinder and brake distribution.
You would have to run the larger rear rotor to fit the caliper. The braking dynamics in the rear would be way off the charts IMO (way too much rear rotor clamp load)
It would be a very unhappy brake system w/severe Bias issues
Thanks for the inputs, gentlemen. There is an offset different between the stock front (350mm; p/n 4615A024) and rear (330mm; p/n 4615A025) rotor hats. I guess the rear rotors need the offset to accommodate drum handbrakes. So to make it work, I have to first get rotor hats like the Girodisc ones with the offset for the rear, and then find 350mm rotor rings that will fit these hats. It would be very finicky at least, and then I could run into the issues like brake bias as mentioned above.
I saw Bulletproof's Continuum (Z4 with Varis body kit) having the same brakes for both front and rear, and that was what inspired my question. Our cars have amazing brakes from the factory, albeit the weakness on the rear, which is instantly noticeable when you rotate the car through a corner with left-foot braking. The current solution is aftermarket brake kits, but those have a limited selection of replacement brake rotors and pads. The stock brakes have the widest selection, including many lightweight rotors and bang for the buck semi-metallic race pads and ceramic daily pads.
Jun 15, 2018, 04:41 PM
