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Suspension & Braking Forum by BimmerWorld
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Old 06-23-2013, 11:32 AM   #1
1moremod
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rotors

I have a 2002 e46 m3 that has drilled rotors. How do i determine if they are the csl or zcp? If i am correct you cant just switch between the two without different brackets. thanks
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Old 06-23-2013, 01:06 PM   #2
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Measurements. The standard m3 and zcp m3 have different rotor sizes. I can't remember what they are off the top of my head but I want to say the standard ones are 345 mm versus the bigger zcp rotors? Or vice versa. Just look up the rotor sizes for the two and see which measurement matches the rotors on your car
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Old 06-23-2013, 01:57 PM   #3
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^^^ sounds like a good plan.
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Old 06-23-2013, 02:06 PM   #4
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i think standard are 325 and zcp and csl are 345 but they use different mounting brackets and calipers so the zcp rotor wont work with csl caliper?
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Old 06-23-2013, 03:05 PM   #5
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i think standard are 325 and zcp and csl are 345 but they use different mounting brackets and calipers so the zcp rotor wont work with csl caliper?
Zcp rotors and csl rotors are the same size. So they share the same size calipers and brackets. The standard rotors, however, will not fit properly with a zcp/csl caliper or bracket, and the zcp/csl rotor will not fit on a standard m3 caliper or bracket. Mixing and matching doesn't work with our cars unfortunately. You need either full zcp/csl brake system or full standard brake system. They aren't interchangeable.
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Old 06-23-2013, 08:06 PM   #6
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Zcp rotors and csl rotors are the same size. So they share the same size calipers and brackets. The standard rotors, however, will not fit properly with a zcp/csl caliper or bracket, and the zcp/csl rotor will not fit on a standard m3 caliper or bracket. Mixing and matching doesn't work with our cars unfortunately. You need either full zcp/csl brake system or full standard brake system. They aren't interchangeable.
okay thanks.
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Old 06-25-2013, 11:38 AM   #7
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Measuring, as stated above, is the easiest method of figuring out which brakes you have on your M.

You can change from ZCP/CSL to standard brakes or standard to ZCP/CSL brakes, but a new caliper carrier is required.
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Old 06-25-2013, 12:17 PM   #8
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Measuring, as stated above, is the easiest method of figuring out which brakes you have on your M.

You can change from ZCP/CSL to standard brakes or standard to ZCP/CSL brakes, but a new caliper carrier is required.
thanks got it sorted!
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