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Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking

Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 02-28-2013, 04:52 PM   #1
bmwm330cie46
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Question e46 brake conversion non m to m?

is it a direct replacement to install m3 pads rotors and calipers on my 330ci to save money with out having to buy big brake kit or is there additional parts or custom work involved

Last edited by bmwm330cie46; 02-28-2013 at 04:53 PM.
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Old 02-28-2013, 04:59 PM   #2
choxor
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Carriers will have to be milled for the front. Rears will be more complicated. Search, there are threads on this.
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Old 02-28-2013, 05:01 PM   #3
pawelgawel
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i thought 330 and M share same brakes..

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Old 02-28-2013, 05:13 PM   #4
choxor
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i thought 330 and M share same brakes..

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Uh no. Why would BMW upgrade the power on the M3 and leave the brakes the same as a 330.
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Old 02-28-2013, 05:13 PM   #5
bmwm330cie46
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i mean csl m3 brakes
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Old 02-28-2013, 05:14 PM   #6
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is it a direct replacement to install m3 pads rotors and calipers on my 330ci to save money with out having to buy big brake kit or is there additional parts or custom work involved
you do realize the M3 and 330 both have 325mm front rotors, right? the 330 brakes are more than fine. you don't need to "upgrade"
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Old 02-28-2013, 05:22 PM   #7
bmwm330cie46
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you do realize the M3 and 330 both have 325mm front rotors, right? the 330 brakes are more than fine. you don't need to "upgrade"
i am running a t4 turbo on 13psi over 450 hp with other performance upgrades and a full suspension . that's why i am planing to doing this m3 csl brake upgrade with hawk pads and stop-tech cross drilled rotors . just wondering what is this swap going to run me in parts ?

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Old 02-28-2013, 05:29 PM   #8
bmwm330cie46
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seems like my best bet is to just stick with my 330ci setup and get brembo big brake system. looks like i wont save any money

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Old 02-28-2013, 05:35 PM   #9
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thats what you should do
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Old 02-28-2013, 05:49 PM   #10
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you do realize the M3 and 330 both have 325mm front rotors, right? the 330 brakes are more than fine. you don't need to "upgrade"
325x28 vs 325x25 .. more meat more heat
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Old 02-28-2013, 06:00 PM   #11
bmwm330cie46
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i would prefer the 380mm m3 brembo kit tho over the 330ci 355mm kit since i am rebuilding my lover engine components this summer to run more psi planing to have 600hp and the rebild my engine head at vac hoping to have over 700hp complete . thanks for all help

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Old 03-02-2013, 10:10 PM   #12
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325x28 vs 325x25 .. more meat more heat
thats the fronts , do u know the rear size m3 to 330 , and i also looking for the csl sizes . i defiantly might convert to m3 to fit the largest brembo's on

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Old 03-02-2013, 10:34 PM   #13
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i thought 330 and M share same brakes..

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They're not. Rotors are about the same size (M3 rear rotors are a little bit bigger, but also thinner), but the hydraulics aren't really the same. IIRC the M3 calipers have bigger pistons, and the M3 has a bigger master cylinder too. This is probably mostly the pads, but the M3 brakes have noticeably more bite. And unlike the 330 brakes, they're not death traps in the rain.

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Old 03-02-2013, 11:05 PM   #14
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How are 330 brakes death traps in the rain?
700hp hey.... What diff are you running?
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Old 03-03-2013, 07:58 AM   #15
rowdy lee
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bigg brakes

Check a friend's website for machined carriers and Porsche big calipers.
Less expensive than others and excellent performance.

RallyRoad.com
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Old 03-03-2013, 08:39 PM   #16
bmwm330cie46
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How are 330 brakes death traps in the rain?
700hp hey.... What diff are you running?
i went from a mt 330 diff 2.92 to 3.38 from a auto 330 diff and swaped the trans from 5 speed to a zhp 6 speed to bring the top speed back up . just need to make it a lsd becouse i dont get any traction during accel in first gear with one wheel spin
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Old 03-03-2013, 11:16 PM   #17
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How are 330 brakes death traps in the rain?
700hp hey.... What diff are you running?
Every RWD 330 I've driven in heavy rain has unresponsive brakes for about a second after a few minutes of no braking activity. Didn't matter if the rotors and pads were brand new. Lines and fluid didn't do crap either. M3 never had the same problem.

Loads of 330 owners experience the same thing: http://forum.e46fanatics.com/showthr...t=68805&page=2

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Old 03-04-2013, 07:18 PM   #18
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Can't say I've ever run into that problem with my 330i.
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Old 04-07-2013, 11:01 PM   #19
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can't say i've ever run into that problem with my 330i.
+1.
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