M3 Brakes

Mgouldstone · 10-17-2019, 10:03 AM

Hi.

I have the opportunity to buy some M3 brake calliper and discs (front 380mm front and 370mm rear). Will they fit on my f31 335 without any modification.?

Thanks in advance for your help.

cfm56d7b · 10-17-2019, 10:37 AM

What wheels - size, offset - does your car have at the moment?

FaRKle! · 10-17-2019, 11:18 AM

Calipers will fit (with 18"+ wheels), but rotors won't.

Eschmacher · 10-17-2019, 02:52 PM

Yep, like Farkle said. You will have to use the 370mm front and 345mm rotors. I just did this swap.

johnung · 10-17-2019, 03:36 PM

Quote:

Originally Posted by Mgouldstone

Hi.

I have the opportunity to buy some M3 brake calliper and discs (front 380mm front and 370mm rear). Will they fit on my f31 335 without any modification.?

Thanks in advance for your help.

The other guys already warned you that the M3 rotors won't fit your car. Don't over pay for the used calipers just because they came off an M3. They are no different that the F3x M Sport (Blue) or M Performance (red, orange, yellow) calipers that fit over 370mm front rotors and 345 rear rotors. I've seen used sets that look brand new without a nick or scratch sell for $1,000-$1,200. I seen really banged up sets in need of complete rebuilding and paint or powder coating sell for $400-$500 less.

Zimmermann makes high quality rotors coated against rust for a fraction of BMW rotors.

Upgrade your brake lines to stainless steel at the same time for minimal labor. Much better brake pedal feel. StopTech set of four only $106.

10-17-2019, 10:03 AM	#1
Mgouldstone Registered 0 Rep 3 Posts Drives: BMW 335xd Join Date: Oct 2019 Location: UK iTrader: (0)	M3 Brakes - on F31 Hi. I have the opportunity to buy some M3 brake calliper and discs (front 380mm front and 370mm rear). Will they fit on my f31 335 without any modification.? Thanks in advance for your help.
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10-17-2019, 10:37 AM	#2
cfm56d7b Lieutenant General 5876 Rep 10,249 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	What wheels - size, offset - does your car have at the moment?
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10-17-2019, 11:18 AM	#3
FaRKle! Brigadier General 4007 Rep 3,535 Posts Drives: 328d Wagon, M2 Comp, i4 eD35 Join Date: Sep 2016 Location: Bay Area, CA iTrader: (4) Garage List 2023 BMW i4 eDrive 35 [0.00] 2017 BMW 328dx Wagon [0.00] 2021 BMW M2 Competi ... [0.00]	Calipers will fit (with 18"+ wheels), but rotors won't. __________________ -328d Wagon Build Log (with helpful reference links) -My YouTube Channel for some of the best DIYs and in depth information Please don't PM me for suspension recommendations unless interested in paid private consultations.
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10-17-2019, 02:52 PM	#4
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	Yep, like Farkle said. You will have to use the 370mm front and 345mm rotors. I just did this swap.
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