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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > 335i brake upgrade on N53 e92



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      10-30-2014, 03:38 PM   #1
essex_lad
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Post 335i brake upgrade on N53 e92

So now that my car is pushing more power getting very bad warped I thought it was time for a bit of an upgrade.

I did look at getting a BBK but seeing as I only track once or twice a year I couldn't really warrant the cost so I decided to go for some high performance 335i brakes.

I have only done the fronts for now but I will get round to the rear soon.


Parts list:

335i Front callipers
Black Diamond 12 groove discs
Black Diamond predator pads
stoptec stainless brake lines
5.1 Brake fluid

Old 325i brakes:


New disc and calliper:


Stainless brake line:



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      10-30-2014, 05:32 PM   #2
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Those 325 brakes look like the ABS has been heavily engaged leaving deposits and overheated areas on the disc. Hard to tell for sure but it looks that way.

Have you considered replacing the rubber guide rod bushings with solid brass bushings? Makes for a huge improvement in brake performance and pedal feel. And it's cheap as mods go.
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      10-30-2014, 05:35 PM   #3
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Quote:
Originally Posted by justpete View Post
Those 325 brakes look like the ABS has been heavily engaged leaving deposits and overheated areas on the disc. Hard to tell for sure but it looks that way.

Have you considered replacing the rubber guide rod bushings with solid brass bushings? Makes for a huge improvement in brake performance and pedal feel. And it's cheap as mods go.
yer they have had some pretty heavy breaking but I think they are cheap discs and pads made from a cheap material which I guess doesn't help.

No I didn't know about that mod, it sounds interesting though. Where can I get it?
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      10-30-2014, 05:40 PM   #4
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Quote:
Originally Posted by essex_lad View Post
yer they have had some pretty heavy breaking but I think they are cheap discs and pads made from a cheap material which I guess doesn't help.

No I didn't know about that mod, it sounds interesting though. Where can I get it?
Threshold braking avoids getting into the ABS so this doesn't happen except in panic stops, fyi.

Bimmerworld sells the bushing kit here http://store.bimmerworld.com/bimmerw...e-kit-p46.aspx

You'll want to get some of this to lubricate the guide pins and the contact points of the pads on the slider http://www.permatex.com/products-2/p...bricant-detail It works very well.
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      10-30-2014, 05:46 PM   #5
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Quote:
Originally Posted by justpete View Post
Threshold braking avoids getting into the ABS so this doesn't happen except in panic stops, fyi.

Bimmerworld sells the bushing kit here http://store.bimmerworld.com/bimmerw...e-kit-p46.aspx

You'll want to get some of this to lubricate the guide pins and the contact points of the pads on the slider http://www.permatex.com/products-2/product-categories/specialized-maintenance-repair/single-use-pouches/permatex--single-use-ceramic-extreme-brake-lubricant-detail It works very well.
Thanks so much, im going to get some. I wish I knew before I fitted them though now I got to mess around with it all agen
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      11-05-2014, 01:09 PM   #6
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how they look after a week:

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      11-17-2015, 01:09 PM   #7
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Nice one

for any one else looking to do this the 330i calipers/disks 2008 (N53)- are the same. (pre LCI anyway)

Might not have the 335i price bloat ?
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      11-17-2015, 03:06 PM   #8
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Quote:
Originally Posted by essex_lad View Post
Thanks so much, im going to get some. I wish I knew before I fitted them though now I got to mess around with it all agen
One reviewer on Bimmerworld says the brass caliper guide pins require frequent maintenance which is to lubricate them and clean them. Lube them with what? Regular grease?
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      11-17-2015, 03:59 PM   #9
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Quote:
Originally Posted by only1harry View Post
One reviewer on Bimmerworld says the brass caliper guide pins require frequent maintenance which is to lubricate them and clean them. Lube them with what? Regular grease?
This hasn't been my experience. They've haven't needed any maintenance over more than 10K miles of street and track driving. Then again the weather here is mild and the winter is without salt on the roads so maybe that's something.

Use this stuff:

http://www.permatex.com/products-2/p...bricant-detail
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      11-17-2015, 05:53 PM   #10
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There was supposed to be a "better" brass caliper guide pin kit put out by ECS, but they pulled it right after announcing and it has been labeled on back order for months:

https://www.ecstuning.com/BMW-E92-33...per/ES2804354/
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      11-17-2015, 06:09 PM   #11
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Quote:
Originally Posted by Dopeslope View Post
Nice one

for any one else looking to do this the 330i calipers/disks 2008 (N53)- are the same. (pre LCI anyway)

Might not have the 335i price bloat ?
Im sure when I done this and looking at the disc diameter the 335 was bigger than the 330. But I might be wrong. One thing I found though is there's more discs and calipers available for the 335 new and old. 330 parts are hard to come by.
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      11-17-2015, 06:11 PM   #12
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Quote:
Originally Posted by only1harry View Post
One reviewer on Bimmerworld says the brass caliper guide pins require frequent maintenance which is to lubricate them and clean them. Lube them with what? Regular grease?
Tbh I never ended up getting them so I wouldn't know but if that's the case I'm glad I kept the standard sliders.
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      11-17-2015, 06:13 PM   #13
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Quote:
Originally Posted by ajsalida View Post
There was supposed to be a "better" brass caliper guide pin kit put out by ECS, but they pulled it right after announcing and it has been labeled on back order for months:

https://www.ecstuning.com/BMW-E92-33...per/ES2804354/
That's just not fair doing things like that lol.
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      11-17-2015, 06:40 PM   #14
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When I saw your pics the calipers looked the same as mine, quick check on Real OEM and they are same part number for disc and caliper

Are those guide pins not sealed or booted? If not it sounds more for track applications where brakes will be stripped/checked after each race meet.

EDIT: Those ecs ones look good and sealed! Backorder !
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      11-17-2015, 10:26 PM   #15
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Quote:
Originally Posted by ajsalida View Post
There was supposed to be a "better" brass caliper guide pin kit put out by ECS, but they pulled it right after announcing and it has been labeled on back order for months:

https://www.ecstuning.com/BMW-E92-33...per/ES2804354/
They mess up the rear version as well. They were to long. These for the front were too wide or too narrow. Don't remember. Anyhow, a lot of complaints of ECS recently.
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      11-17-2015, 10:28 PM   #16
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Quote:
Originally Posted by essex_lad View Post
Im sure when I done this and looking at the disc diameter the 335 was bigger than the 330. But I might be wrong. One thing I found though is there's more discs and calipers available for the 335 new and old. 330 parts are hard to come by.
NA 330i has smaller front and identical rear brakes. EU 330i shares the brakes front and rear. At least that is what I know.
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      12-06-2015, 08:55 AM   #17
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I just had a look at RealOEM for my car UK 330i.

It looked to have 336mm rear discs

Front had 330mm or 348mm (for vehicles with Usable load increase).

So I am assuming I have 330mm on the front as calliper does not look like the 335 calliper. I am guess if I needed new pads & discs in the future I could throw a bit extra at it and get the 335i Callipers fitted & would get a brake upgrade for a few hundred more.

Was looking a BMW Performance kits & they are 338mm front and 324 rear. So slightly bigger front with a better calliper but smaller on the back.
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      12-09-2015, 01:14 AM   #18
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Quote:
Originally Posted by Not a Diesel!!! View Post
I just had a look at RealOEM for my car UK 330i.

It looked to have 336mm rear discs

Front had 330mm or 348mm (for vehicles with Usable load increase).

So I am assuming I have 330mm on the front as calliper does not look like the 335 calliper. I am guess if I needed new pads & discs in the future I could throw a bit extra at it and get the 335i Callipers fitted & would get a brake upgrade for a few hundred more.

Was looking a BMW Performance kits & they are 338mm front and 324 rear. So slightly bigger front with a better calliper but smaller on the back.
It all depends on how much money your willing to throw at it.
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      12-09-2015, 04:31 PM   #19
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I think you installed your rotors incorrectly.

Typically, slotted rotors have the slots facing toward the front. This way the slots cut into the pad material.

At least that's how Stop Tech slotted rotors are.
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      12-10-2015, 11:42 AM   #20
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The reason the slots generally run counter to the vanes is to prevent cracking in the unsupported areas. That's why a lot of the newer race rotors are not using the full radial grooves but smaller hooked grooves at different radius points on the rotor face. - take care - Dave
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      12-10-2015, 12:04 PM   #21
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Quote:
Originally Posted by matteblue3er View Post
I think you installed your rotors incorrectly.

Typically, slotted rotors have the slots facing toward the front. This way the slots cut into the pad material.

At least that's how Stop Tech slotted rotors are.
I'm afraid that you think wrong! Slots will face the front only on directional slotted rotors. Those from the above photos are not. They can be mounted on either side, they are not left and right, so on one side the slots will face forward and on the other the opposite, towards the back.
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      12-10-2015, 02:57 PM   #22
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Quote:
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I'm afraid that you think wrong! Slots will face the front only on directional slotted rotors. Those from the above photos are not. They can be mounted on either side, they are not left and right, so on one side the slots will face forward and on the other the opposite, towards the back.
To be fair the rotors were marked up passenger side and drivers side so I put them on the way the manufacturer specified and seeing as they make brake systems for championship race cars I have all faith in the markings lol.
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