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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Oct-20-2018, 01:13:39 PM   #1
Paulo M
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Default Brembo 380x32 confirmation

I know, second thread concerning my brakes. But can someone confirm these are the replacement rotor rings for my front brembo 8piston gt 380mm rotors? Just realized itís my fronts that needs replacing due to its higher mileage. Allows me to go with slotted to match my slotted rears as well.



Im pretty sure mine are 380x32, but Iíve also seen 380x34 on the site. Just need confirmation, is the ones linked below are the direct replacement. Want to make sure before I spend $ on these. Thanks!



https://www.turnermotorsport.com/p-1...RoCw-gQAvD_BwE


My current rotors
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Last edited by Paulo M; Sat, Oct-20-2018 at 01:42:54 PM.
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Old Sat, Oct-20-2018, 03:16:25 PM   #2
mrgizmo04
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Default Re: Brembo 380x32 confirmation

I'm not able to answer your q directly, but you can also check out zeckhausen and email them. They seem to carry direct replacement Stoptech rotors for Brembo. Seem cheaper.

https://www.zeckhausen.com/catalog/index.php?cPath=82

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Old Sat, Oct-20-2018, 04:59:52 PM   #3
Paulo M
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Default Re: Brembo 380x32 confirmation

^thanks man

Unfortunately heís closed at the moment but I did email him. I plan to stick with brembo for my rotors however.

From doing more research outside this forum, I believe itís 380x34. Unfortunately these are an extra ~$300 than the 380x32. Unless 380x32 and 380x34 both work?





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Old Sat, Oct-20-2018, 06:11:18 PM   #4
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Default Re: Brembo 380x32 confirmation

That's a hairy question, because that gets into what can be accommodated by the width of calipers, height of pistons, thickness of pads, etc. Again, not answering your q, sorry, but at least you get free bumps from me, lol.

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'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.

Happy to help with VANOS or any other DIY job around NorCal
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Old Sat, Oct-20-2018, 06:37:55 PM   #5
Paulo M
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Default Re: Brembo 380x32 confirmation

It’s all good thanks anyway. I’ll just buy the 380x34 to be safe

Also realized AFTER I took the rotors apart that they aren’t even that worn, looked worse when I saw on the car. I was able to look back at its history and they only had 8k miles when I bought it. So roughly 20k miles total, and supposedly these last much longer than that. I’ll just sell these old ones so the new price won’t hurt me too bad.
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Old Sat, Oct-20-2018, 06:42:56 PM   #6
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Default Re: Brembo 380x32 confirmation

Quote:
Originally Posted by Paulo M View Post
Itís all good thanks anyway. Iíll just buy the 380x34 to be safe

Also realized AFTER I took the rotors apart that they arenít even that worn, looked worse when I saw on the car. I was able to look back at its history and they only had 8k miles when I bought it. So roughly 20k miles total, and supposedly these last much longer than that. Iíll just sell these old ones so the new price wonít hurt me too bad.
Measure the old ones with a caliper. If they were 34 originally they will probably be 33.x

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'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.

Happy to help with VANOS or any other DIY job around NorCal
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Old Mon, Oct-22-2018, 02:45:51 PM   #7
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Default Re: Brembo 380x32 confirmation

Quote:
Originally Posted by Paulo M View Post
Itís all good thanks anyway. Iíll just buy the 380x34 to be safe

Also realized AFTER I took the rotors apart that they arenít even that worn, looked worse when I saw on the car. I was able to look back at its history and they only had 8k miles when I bought it. So roughly 20k miles total, and supposedly these last much longer than that. Iíll just sell these old ones so the new price wonít hurt me too bad.
Hey, I think that is the wrong size. I am pretty sure the rotors are measured at 380x32 for the e46 m3.

Honesty, if you only have 20k miles total on the rotor. I am almost 100% confident those rotors are still good and you might be wasting money buying new rotors. The brembo rotors last an insane amount of time unless they are 20,000 mile hard track miles.
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Old Mon, Oct-22-2018, 05:31:30 PM   #8
Paulo M
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Default Re: Brembo 380x32 confirmation

Quote:
Originally Posted by bmw m3 s50 View Post
Hey, I think that is the wrong size. I am pretty sure the rotors are measured at 380x32 for the e46 m3.

Honesty, if you only have 20k miles total on the rotor. I am almost 100% confident those rotors are still good and you might be wasting money buying new rotors. The brembo rotors last an insane amount of time unless they are 20,000 mile hard track miles.
Hey, thanks man. Itís actually 380x34, which sucks bcs itís $1,500 vs $1,100 for 380x32. Oh well.

Reason Iím swapping is bcs I noticed a noticeable lip on the edge of the rotors, and I read here that anything over 1mm then it needs to be swapped. I panicked and disassembled. Looking at it now, itís not bad and may still have plenty of life. Now I need new hardware, well, now might as well swap rotors since I want matching slotted front/rear anyway. Iíll just sell my old ones. My rears are practically new so I know this will be last time I swap rotors (trying to justify my purchase lol).
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Discussing Comprehensive CSL Intake Thread in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)