BBK necessary on 335i ...?

S4to335 · 04-03-2007, 09:38 AM

After driving the car for a week..I am pretty happy with the stock brakes...before I actually took delivery..I was thinking that a BBK was gonna be necessary. Now, I dont think that. I think some cross-drilled or slotted rotors..with some agressive pads..and maybe some Motul RBF600 brake fluid will do the trick for occasional road racing track use.

How big are the rotors front and back again? They look like 355 front..and 345 rear..anyone know for sure?

wj4 · 04-03-2007, 11:36 AM

BBK is not necessary unless you're a hardcore tracker, I mean hardcore...if you plan to run Thunder Hill weekly then get it. Most of the guys I know just get it for show purposes.

Also I noticed that the brakes work better after bedding. Aftermarket pads and rotors, along with stainless steel brakelines and fluid should be good enough for you to track on!

kujo · 04-03-2007, 11:39 AM

yeah, what he said.......

But thouse 355 Stop Techs will look SOOOOOOOoooooooooooo killer !!

Daya · 04-03-2007, 08:53 PM

13.7" front = 348mm
13.2" rear = 335mm

Raider · 04-03-2007, 10:45 PM

BBK don't help you stop faster

It reduces brake fade, and are lighter than OEM

Adham · 04-03-2007, 10:49 PM

just pads should do you

PSI Power · 04-03-2007, 11:15 PM

Quote:

Originally Posted by Raider

BBK don't help you stop faster

It reduces brake fade, and are lighter than OEM

What Raider said.

However, keep in mind, once you start increasing power with a Chip, Exhaust and what not, you may need increased stopping power and definitely increased fade resistance.

Also, BBK do truly look Bling, Bling.

wj4 · 04-03-2007, 11:33 PM

Quote:

Originally Posted by Raider

BBK don't help you stop faster

It reduces brake fade, and are lighter than OEM

Yes, but when you track your car often, fading becomes a very critical issue.

ironic · 04-04-2007, 12:00 AM

the brakes on the 335i are massive, maybe some better rotors and bads would be enough

CokerRat · 04-04-2007, 01:59 PM

Quote:

Originally Posted by ironic

the brakes on the 335i are massive, maybe some better rotors and bads would be enough

Agreed. On my NSX I replaced the stock rotors with Stoptech Aerorotors (2-piece, floating aluminum hat, slotted) and Cobalt Friction GT Sport pads and it was night-and-day better. Another thing you can look into if you're getting spongy brakes is to run some ducting from the front spoiler to the inboard side of the rotors to improve airflow. Ducting is cheap but may not be simple, and I have no idea as to the practicality of the routing on the E90 (mine hasn't arrived yet), but the concept is good and results in measurable improvements in brake cooling.

04-03-2007, 09:38 AM	#1
S4to335 Brigadier General 434 Rep 4,380 Posts Drives: 2014 Audi A4 / 91 Track Miata Join Date: Jan 2007 Location: San Jose, CA iTrader: (5) Garage List 2007 BMW 335i sedan [8.00]	BBK necessary on 335i ...? After driving the car for a week..I am pretty happy with the stock brakes...before I actually took delivery..I was thinking that a BBK was gonna be necessary. Now, I dont think that. I think some cross-drilled or slotted rotors..with some agressive pads..and maybe some Motul RBF600 brake fluid will do the trick for occasional road racing track use. How big are the rotors front and back again? They look like 355 front..and 345 rear..anyone know for sure? __________________ Car is now gone .... :-(
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04-03-2007, 11:36 AM	#2
wj4 Major General 335 Rep 7,719 Posts Drives: E90 manual 335i Join Date: Nov 2006 Location: Burbank, CA iTrader: (8)	BBK is not necessary unless you're a hardcore tracker, I mean hardcore...if you plan to run Thunder Hill weekly then get it. Most of the guys I know just get it for show purposes. Also I noticed that the brakes work better after bedding. Aftermarket pads and rotors, along with stainless steel brakelines and fluid should be good enough for you to track on!
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04-03-2007, 11:39 AM	#3
kujo Major 144 Rep 1,153 Posts Drives: BMW Join Date: May 2006 Location: LA, CA USA iTrader: (1)	yeah, what he said....... But thouse 355 Stop Techs will look SOOOOOOOoooooooooooo killer !!
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04-03-2007, 08:53 PM	#4
Daya Lieutenant Colonel 200 Rep 1,741 Posts Drives: e92 335 space gray/coral red Join Date: Sep 2006 Location: Chicago iTrader: (1) Garage List 2007 E92 335 [9.66]	13.7" front = 348mm 13.2" rear = 335mm __________________ GIAC S2 \| Brembo GT BBK 355/345 \| BBS CH-R \| Michelin Pilot Super Sports \| AR Design: DP, S1 Oil Cooler, OCC \| AMS FMIC \| Bastuck Quad Exhaust \| Borla MP \| KW V1 \| Stett: CAI, CP \| Forge DV \| P3 Boost Gauge \| Arkym: Front Lip, Rear Quad Diffuser \| Vorsteiner CSL Trunk \| LUX H8 \| ModMyNav \| MFD M3 Sideskirts \| BMW M-Tech Front/Rear Bumpers, Edition Grills
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04-03-2007, 10:45 PM	#5
Raider Panties Sniffer 34 Rep 688 Posts Drives: Stealthy 335Ci Join Date: Mar 2007 Location: Isengard iTrader: (0)	BBK don't help you stop faster It reduces brake fade, and are lighter than OEM __________________ Nash for MVP
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04-03-2007, 10:49 PM	#6
Adham Second Lieutenant 10 Rep 243 Posts Drives: 335i sedan Join Date: Dec 2006 Location: Dallas, TX iTrader: (0)	just pads should do you __________________
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04-04-2007, 12:00 AM	#9
ironic Major General 254 Rep 8,338 Posts Drives: Jet Black 335i Join Date: Dec 2006 Location: San Francisco, Ca iTrader: (22)	the brakes on the 335i are massive, maybe some better rotors and bads would be enough __________________ Widebody 335i Project Car BUILD \| PHOTOSHOOT
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