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Suspension & Braking Forum by BimmerWorld
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!
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Old 02-06-2014, 04:08 PM   #1
S2000
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Join Date: Sep 2009
Location: Austin
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My Ride: E86Z4M, E60M5, M3
E46 M3 std vs. Comp package Brakes

Looking to buy used E46 M3.

I am aware that the Comp package has bigger front rotors.
Are there also differences :
- Front Brake Calipers
- Rear Brake Calipers
- Rear Brake rotors
- Brake booster

I want to know whether one can simply replace the front rotors on std (non-comp) then the std (non-comp) brakes be just as good as comp package.

Thanks
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Old 02-07-2014, 01:42 PM   #2
Tangent_
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Looking at RealOem, there's definitely more to change. On the front the caliper itself seems to be the same, but the carrier it bolts to is different. (To provide the clearance for the larger rotor) The pads are also different. On the rear, the caliper, carrier, and pads are different. The master cylinder appears to be the same. The rotors are obviously different front and rear.
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Old 02-20-2014, 12:43 PM   #3
Alex323Ci
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well as you know the rotors are different design, front is also larger diameter.
as for the calipers and carriers; they are all different because they are powder coated black. Physical differences are the front carriers are larger and the rear caliper has a larger piston. Pads are same size as stock, but different material.

To buy least amount of parts to switch over, you could get front carriers and rotors. rear caliper will work but the larger piston one would be ideal for bias. master cylinder is the same and untouched.
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