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F30 / F31 / F32 / F33 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

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  #1  
Old 01-29-2013, 11:13 AM
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Blax Blax is offline
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Mein Auto: F30 328i x two
320i v 328i Brakes and stopping power

Can't find good data, but looking at the photos, the discs on the 320i looks considerably smaller than it's siblings.

I find the 328i brakes to be the weakest part of the car, and would hate to have something with LESS stopping power, though otherwise like the idea of a 320i.

Wondering if anyone has any better info?
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  #2  
Old 01-29-2013, 11:28 AM
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EDIT - The front and rear brakes on the 320i and 328i are the same based on part number.

Tim

Last edited by tim330i; 01-29-2013 at 11:29 AM.
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  #3  
Old 01-29-2013, 11:43 AM
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Blax Blax is offline
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Thanks Tim.

Here is the comparison I was making on the BYO sites. The left wheel is the 320 and the right is the 328. Seems to me the right disc is bigger.

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  #4  
Old 01-29-2013, 11:45 AM
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The online configurator has plenty of flaws. It is possible the used wheels photoshopped from the 335i.
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  #5  
Old 01-29-2013, 12:05 PM
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As always Tim, you are full of helpful facts and advice. Thanks again.
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  #6  
Old 01-29-2013, 12:29 PM
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Quote:
Originally Posted by Blax View Post
Can't find good data, but looking at the photos, the discs on the 320i looks considerably smaller than it's siblings.

I find the 328i brakes to be the weakest part of the car, and would hate to have something with LESS stopping power, though otherwise like the idea of a 320i.
The 328i (and identical 320i) brakes have plenty of thermal capacity for typical street use. But for dramatically improved pedal feel and enough capacity for track use, this is what I installed:



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StopTech 4-wheel big brake upgrade

2001 BMW E39 540i 6-Speed (Traded-in for F30)
StopTech 4-wheel big brake upgrade
M5 Limited Slip Differential, Front Swaybar
Dinan Stage 3 Suspension, Strut Tower Brace
Rogue Short Shifter, Transmission Mounts
European Dash Conversion
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  #7  
Old 01-29-2013, 01:57 PM
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Quote:
Originally Posted by Blax View Post
Thanks Tim.

Here is the comparison I was making on the BYO sites. The left wheel is the 320 and the right is the 328. Seems to me the right disc is bigger.

It could be the 320i brakes are smaller on European models and that 320i pic is of a European model.
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  #8  
Old 01-29-2013, 02:36 PM
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So 335 brakes are different? I never knew this. Are they much better?
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  #9  
Old 01-29-2013, 02:38 PM
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Quote:
Originally Posted by krash View Post
So 335 brakes are different? I never knew this. Are they much better?
I haven't had a chance to test them back to back in a repetitive stop test but daily driving back to back the 335i brakes provide much better feedback and pedal feel.

Tim
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  #10  
Old 01-29-2013, 02:55 PM
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Originally Posted by tim330i View Post
I haven't had a chance to test them back to back in a repetitive stop test but daily driving back to back the 335i brakes provide much better feedback and pedal feel.

Tim
Cool. Thanks.
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  #11  
Old 01-30-2013, 06:33 PM
Ronin951 Ronin951 is offline
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Originally Posted by DZeckhausen View Post


Not the car or brakes. Your garage is to die for. I bet raised flooring like that cost a fortune.
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  #12  
Old 01-30-2013, 07:58 PM
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Quote:
Originally Posted by tim330i View Post
EDIT - The front and rear brakes on the 320i and 328i are the same based on part number.

Tim
Quote:
Originally Posted by Blax View Post
Thanks Tim.

Here is the comparison I was making on the BYO sites. The left wheel is the 320 and the right is the 328. Seems to me the right disc is bigger.

Quote:
Originally Posted by tturedraider View Post
It could be the 320i brakes are smaller on European models and that 320i pic is of a European model.
34116792217 - front brake disc is available only on the European F30 316i, 318i, & 320i and the F21 116i, 118i, & 120i.

34116792219 - is the front disc that comes on the U.S. 328i.

I haven't found a measurement yet, but I'd be willing to bet 34116792217 is a smaller disc.
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Last edited by tturedraider; 01-30-2013 at 08:10 PM.
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  #13  
Old 01-31-2013, 03:34 AM
pkim1079 pkim1079 is offline
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Quote:
Originally Posted by tim330i View Post
I haven't had a chance to test them back to back in a repetitive stop test but daily driving back to back the 335i brakes provide much better feedback and pedal feel.

Tim
There is a post on here comparing the 328/335 on the track. Guess who won - yes the 328i. Even with smaller brakes with less hanging in front of the front axle stopping was similar. As for handling, the kighter car is more nimble. It loses on the straights though of course. But its all about exit speed!
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  #14  
Old 01-31-2013, 07:51 AM
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I heard the same thing. That being said in back to back tests I would guess the 335i brakes fade less and I know for sure they feel better.

Tim
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  #15  
Old 01-31-2013, 08:35 AM
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Quote:
Originally Posted by Ronin951 View Post


Not the car or brakes. Your garage is to die for. I bet raised flooring like that cost a fortune.
Thanks! The floor wasn't actually raised, it was lowered. I started with only about 6.5 feet of headroom and ended up with 8 feet. That also meant the driveway had to be dug out and redesigned and a stone wall had to be replaced.

Here's a slide show of the "dream garage" project:

https://plus.google.com/photos/11685...94326215204593

I've been wanting to do something like this for a very long time. Having a mid-rise lift makes wheel swaps much faster and brake work a joy. And having it drop flush into the floor, without any posts in the way, means I don't lose any space or flexibility, especially if I want to park at an angle to detail a car.
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Owner, Zeckhausen Racing



------
2012 BMW F30 328i Luxury Line 8-Speed
StopTech 4-wheel big brake upgrade

2001 BMW E39 540i 6-Speed (Traded-in for F30)
StopTech 4-wheel big brake upgrade
M5 Limited Slip Differential, Front Swaybar
Dinan Stage 3 Suspension, Strut Tower Brace
Rogue Short Shifter, Transmission Mounts
European Dash Conversion
CDV deleted
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  #16  
Old 01-31-2013, 09:09 PM
Ronin951 Ronin951 is offline
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I think I just wet myself LOL
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  #17  
Old 01-31-2013, 10:04 PM
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tturedraider tturedraider is offline
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Quote:
Originally Posted by DZeckhausen View Post
Thanks! The floor wasn't actually raised, it was lowered. I started with only about 6.5 feet of headroom and ended up with 8 feet. That also meant the driveway had to be dug out and redesigned and a stone wall had to be replaced.

Here's a slide show of the "dream garage" project:

https://plus.google.com/photos/11685...94326215204593

I've been wanting to do something like this for a very long time. Having a mid-rise lift makes wheel swaps much faster and brake work a joy. And having it drop flush into the floor, without any posts in the way, means I don't lose any space or flexibility, especially if I want to park at an angle to detail a car.
Wow! Impressive. Off the top of my head I'm guessing that was a at least a $30k project. ($50k was my first thought.)
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"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- Geo. Orwell

2006 330i Sonora w/ ActiveAutoWerke flash tune :-)
2004 330i ZHP Imola/NB - missed
2000 328i TiAg - gone but not forgotten

** Join the BMW CCA www.bmwcca.org
member #388003 - Use me as a referral & you could win a one day ///M Driving School!! **
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