135i factory fitted front rotors. 2 piece?

dojk · 02-24-2016, 09:23 AM

Looking at replacing my worn rotors, even with bmw part # 3411677864 for the direct replacement my search tells me they are 1 piece rotors.

But I noticed the factory fitted rotors on the car are blanks but are 2 piece. Please refer to attached pic.

Is there an another part number for what I have on my car?

asbrr · 02-24-2016, 10:08 AM

Part number looks right. The rotors are indeed 2 piece, but not in the traditional sense where you can replace / service the ring separate from the hat. So they are referred to as 1-piece rotors...what you have are the standard 135 rotors.

That's my guess anyway...

dojk · 02-24-2016, 10:11 AM

Yes. Correct part number but if you look at pics of the rotor with those part numbers, they don't seem to be 2 piece.

Can anyone please share a picture of their factory fitted rotors as confirmation?

asbrr · 02-24-2016, 10:28 AM

Quote:

Originally Posted by dojk

Yes. Correct part number but if you look at pics of the rotor with those part numbers, they don't seem to be 2 piece.

Can anyone please share a picture of their factory fitted rotors as confirmation?

You can't trust those pics, if you're ordering that part from a BMW dealer, rest assured you will get the correct rotors. There are 3rd party brands that will sell an "equivalent" of that part number, those may not be 2 piece design so again if you're buying genuine BMW, you have the correct part number and the rotors will look just like the ones in your pic, except newer

dojk · 02-24-2016, 10:45 AM

Thank You.

asbrr · 02-24-2016, 11:01 AM

You're welcome.

As an illustration, the ECS tuning site shows 3 options for the 135:

- BMW Genuine (they don't have a damn picture unfortunately)
https://www.ecstuning.com/BMW-E82-13...ors/ES2102479/

- Zimmerman OEM equivalent (you'll notice these are NOT 2 piece design)
https://www.ecstuning.com/BMW-E82-13...ors/ES2102493/

- BMW Genuine "Performance" (these are identical to the standard 135 rotors, except cross drilled and slotted. You can see they are a 2 piece design)
https://www.ecstuning.com/BMW-E82-13...ors/ES2102485/

slonik · 02-25-2016, 03:22 PM

they are two piece from factory, but fixed, not floating, like on M series.

same design rotors you can find on many newer bmw models.

02-24-2016, 09:23 AM	#1
dojk Private First Class 19 Rep 179 Posts Drives: E82 135i Join Date: Nov 2010 Location: Malaysia iTrader: (0)	135i factory fitted front rotors. 2 piece? Looking at replacing my worn rotors, even with bmw part # 3411677864 for the direct replacement my search tells me they are 1 piece rotors. But I noticed the factory fitted rotors on the car are blanks but are 2 piece. Please refer to attached pic. Is there an another part number for what I have on my car? Attached Images
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02-24-2016, 10:08 AM	#2
asbrr Major 543 Rep 1,233 Posts Drives: 2014 335ix M-Sport Join Date: May 2015 Location: Toronto iTrader: (1)	Part number looks right. The rotors are indeed 2 piece, but not in the traditional sense where you can replace / service the ring separate from the hat. So they are referred to as 1-piece rotors...what you have are the standard 135 rotors. That's my guess anyway...
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02-24-2016, 10:11 AM	#3
dojk Private First Class 19 Rep 179 Posts Drives: E82 135i Join Date: Nov 2010 Location: Malaysia iTrader: (0)	Yes. Correct part number but if you look at pics of the rotor with those part numbers, they don't seem to be 2 piece. Can anyone please share a picture of their factory fitted rotors as confirmation?
	Appreciate 0 Quote

02-24-2016, 10:45 AM	#5
dojk Private First Class 19 Rep 179 Posts Drives: E82 135i Join Date: Nov 2010 Location: Malaysia iTrader: (0)	Thank You.
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02-24-2016, 11:01 AM	#6
asbrr Major 543 Rep 1,233 Posts Drives: 2014 335ix M-Sport Join Date: May 2015 Location: Toronto iTrader: (1)	You're welcome. As an illustration, the ECS tuning site shows 3 options for the 135: - BMW Genuine (they don't have a damn picture unfortunately) https://www.ecstuning.com/BMW-E82-13...ors/ES2102479/ - Zimmerman OEM equivalent (you'll notice these are NOT 2 piece design) https://www.ecstuning.com/BMW-E82-13...ors/ES2102493/ - BMW Genuine "Performance" (these are identical to the standard 135 rotors, except cross drilled and slotted. You can see they are a 2 piece design) https://www.ecstuning.com/BMW-E82-13...ors/ES2102485/
	Appreciate 0 Quote

02-25-2016, 03:22 PM	#7
slonik Lieutenant 463 Rep 476 Posts Drives: e46 M3, e82v8 (s65 swapped) Join Date: Feb 2015 Location: Moscow Region, Zhukovsky iTrader: (2)	they are two piece from factory, but fixed, not floating, like on M series. same design rotors you can find on many newer bmw models.
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