size-front brake rotors

NorthernDancer · 07-20-2022, 02:41 PM

Just bought a 06 330xiT and realoem shows 2 rotors, 330x24 and 348x30. Can anyone expand on the difference?

avocet · 07-22-2022, 11:59 PM

I have always thought all e90 330i's were 330mm rotors. But being a touring, perhaps they used the bigger rotors. The 348mm rotors came on the 335i's.
Perhaps there were extended duty options? I seem to recall someone posting about police packages in Europe having the larger brakes.
Regardless, an easy measurement to check which rotors your car has.

The Nightman · 07-31-2022, 03:49 PM

An easy way to tell would be to check the calipers. 348mm calipers have bigger carrier brackets that look very different from the smaller set ups:

07-20-2022, 02:41 PM	#1
NorthernDancer Colonel 850 Rep 2,276 Posts Drives: 08 Sedona 128 & 06 330xiT 6MT Join Date: Apr 2011 Location: Ottawa On Canada iTrader: (3)	size-front brake rotors Just bought a 06 330xiT and realoem shows 2 rotors, 330x24 and 348x30. Can anyone expand on the difference?
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07-22-2022, 11:59 PM	#2
avocet Major 252 Rep 1,157 Posts Drives: 2007 328i 2011 X5d Join Date: Sep 2010 Location: Vancouver bc iTrader: (0)	I have always thought all e90 330i's were 330mm rotors. But being a touring, perhaps they used the bigger rotors. The 348mm rotors came on the 335i's. Perhaps there were extended duty options? I seem to recall someone posting about police packages in Europe having the larger brakes. Regardless, an easy measurement to check which rotors your car has.
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07-31-2022, 03:49 PM	#3
The Nightman Cometh 1090 Rep 1,305 Posts Drives: Boy's Soul Join Date: Jul 2016 Location: Boy's Hole iTrader: (4) Garage List E90 LCI "330i& ... [10.00]	An easy way to tell would be to check the calipers. 348mm calipers have bigger carrier brackets that look very different from the smaller set ups:
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