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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Why are the BBK kits so expensive?



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      02-01-2007, 08:07 AM   #45
sdiver68
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Quote:
Originally Posted by S4to335 View Post
The brakes are nice..but they are not sufficient for the track use I will put them thru.

If they are not for you...they are not good for you. But I will be getting a BBK on my car.

Have you compared BBK to stock calipers with track pads, SS lines, and racing fluid? It's my track experience that those 3 things added to stock calipers make a big difference on the track. The argument was made that my Pro racing experience is on GSXR's, not in cars, so I am looking for other opinions. Which of course ignores my car track and auto-X experience....

Thanks.

Ps Also correct me if I'm wrong, but doesn't the 335i come with 348mm front brakes and cooling ducts, stock?
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      02-01-2007, 10:40 AM   #46
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Quote:
Originally Posted by sdiver68 View Post
Ps Also correct me if I'm wrong, but doesn't the 335i come with 348mm front brakes and cooling ducts, stock?
Yes i THINK so ... but isnt it only a one piston?? Ive heard that but im not sure how that would function correctly when there is no piston on the other side of the rotor to push back and even out the force.
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      02-01-2007, 11:04 AM   #47
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many people do autoX in the states, as its not that expensive to get into it as opposed to track days. autoX might just put more stress on the powertrain/brakes than a day on the track (roadcourse)

And I wont post who is selling brembo kits for $2700, but it is out there and not hard to find.
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      02-01-2007, 12:01 PM   #48
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Stocks will be 2 piston (1 each side).
Its quite easy to test stock brakes, acc. to about 130-140 mph brake as hard as you can to a stop (where safe to do so), acc. away and try them again. Nothing there ? Thought so
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      02-01-2007, 12:13 PM   #49
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Quote:
Originally Posted by ArmyBimmerDude View Post
But most people that do buy BBK's will be just to show everyone walking by the Brembo labels on their calipers.
No argument there. But I will actually use mine. I wish I could drive on the Autobahn.
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      02-01-2007, 01:29 PM   #50
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Originally Posted by mikem View Post
Stocks will be 2 piston (1 each side).
Its quite easy to test stock brakes, acc. to about 130-140 mph brake as hard as you can to a stop (where safe to do so), acc. away and try them again. Nothing there ? Thought so
1 each side? what do you mean? a 2pot caliper means there are two pistons on EACH side pushing the pads in. And what about your test? A civic can do a small number of 130mph-0 tests without fade or failure.
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      02-01-2007, 02:46 PM   #51
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Originally Posted by s4iscool View Post
1 each side? what do you mean? a 2pot caliper means there are two pistons on EACH side pushing the pads in. And what about your test? A civic can do a small number of 130mph-0 tests without fade or failure.
2 pistons each side = 4pot
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      02-01-2007, 03:47 PM   #52
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Here you go, guys - it's a calling!

http://www.e90post.com/forums/showthread.php?t=45629

We're doing a blowout special to get rid of our account credit at Brembo!
JL
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      02-01-2007, 03:50 PM   #53
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Quote:
Originally Posted by s4iscool View Post
1 each side? what do you mean? a 2pot caliper means there are two pistons on EACH side pushing the pads in. And what about your test? A civic can do a small number of 130mph-0 tests without fade or failure.

S4iscool, I meant one piston each side of the disc. What did you think I meant ?

As for a civic, who cares ! I don`t drive a civic, so don`t really care if its stock brakes that are better than PCCB`s. The stock E90 brakes aren`t upto serious use, they`re fine for regular driving but really start pushing it on winding country roads and you soon start to notice it.
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      02-01-2007, 04:06 PM   #54
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I dont know what size brakes come on the 325D, but the 330 has 330mm fronts and the 335 has even larger ones. The 330 stock brakes can handle a number of highspeed scrubs without fading and I would think they are more than capable for most st drivers. Are you saying your brakes fade after 1 hard brake? Then id agree that your stock brakes are crappy.
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      02-01-2007, 04:30 PM   #55
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Here you go, guys - it's a calling!

http://www.e90post.com/forums/showthread.php?t=45629

We're doing a blowout special to get rid of our account credit at Brembo!
JL
You still haven't fessed up to how you did all 4 corners for under 3 grand.
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      02-01-2007, 04:42 PM   #56
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So what is the deal? Im not following what you are offering thats a "blowout", the brain is working slowly today...
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      02-02-2007, 12:08 AM   #57
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I'm sure that this is a really stupid question, but can you get a BBK for the front and use the ample OEM 335c brakes on the rear? I'm guessing no, but that would be ideal for me. I could rationalize a front kit, but all 4 is just too much and being able to utilize the big front setup on the rear would tip me toward this upgrade.
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      02-02-2007, 12:13 AM   #58
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Quote:
Originally Posted by S4to335 View Post
Depends on what you get. Not necessarily. If you buy a 4 wheel Alcon brake kit from StaSIS engineering (for Audi), a Brembo 4 wheel kit, or a Stoptech 4 wheel kit they take into consideration brake bias and it will most likely still be very effective. I opted for a 355m Stoptech kit on my Audi..and it stops real good..retail was $2595 for that "front only" kit. To be honest..I wouldnt take any "stock" 328/335 or any Audi on the track without doing some type of upgrade.
I agree, there would most likely be no issue with a 4 wheel kit, its the 2 wheel kit where you can have issues.
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You must be joking ....
Nope.
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Originally Posted by BoostedBMW View Post
For most applications, BBK's will usually just prevent brake fade and not do much at all over stock in terms of actual braking power.
Same thing in effect. Rears fade, fronts don't. Still messes things up. And as far as I'm concerned more braking power isn't needed anyway, my 328 with small brakes can get ABS to come on whenever I try.
Quote:
Originally Posted by s4iscool View Post
many people do autoX in the states, as its not that expensive to get into it as opposed to track days. autoX might just put more stress on the powertrain/brakes than a day on the track (roadcourse)
AutoX you run the car for what, a minute or two tops? It is stressful but not terrible. A road track you are beating the crap out for the car for multiple laps at a time, much harder on the car, especially temp wise with the 335i if the panic threads are to be believed.
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shit, if i had that kind of money id buy a gtstreet for monday, an ascari a10 for tuesday, a DBS for wednesday and id just ride jessica alba the rest of the week.
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      02-02-2007, 12:38 AM   #59
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Quote:
Originally Posted by ArmyBimmerDude View Post
Um.....who the hell actually does this on normal days? Only on tracks or races. I've driven on the autobahn for 4 years now and my stock brakes have been just fine going 140mph and stop and go and stop and go and stop and go.

You're right about needing bigger brakes for track use, but I guess the real question is who the hell takes their brand new $50,000 car to a track and does this? People in the states arent used to driving that fast and especially on a track, but hey whatever. Good luck.

When I get the Xede, I will be upgrading my brakes. But most people that do buy BBK's will be just to show everyone walking by the Brembo labels on their calipers.
Who cares what people do w/ their cars - I certainly don't. You can't say that upgrading to BBK is pointless jsut because you wouldn't run your brakes that hard. There are people out there that do track their $50k cars, and those people are willing to upgrade to BBKs; furthermore, if they do track their cars then upgrading BBK is a valid upgrade.

Upgrading the brakes is as beneficial to your lap times as upgrading the cars power. Brakes that grab harder and have less fade allow you to brake later and that translates into a faster lap time.

And, FYI. I bought rims to show off the car and I might buy brakes to show off the red Brembo logos, but who cares? You certainly shouldn't. I can't find enough time out of my day to care about what everyone else is doing.
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      02-02-2007, 08:50 AM   #60
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Quote:
Originally Posted by s4iscool View Post
I dont know what size brakes come on the 325D, but the 330 has 330mm fronts and the 335 has even larger ones. The 330 stock brakes can handle a number of highspeed scrubs without fading and I would think they are more than capable for most st drivers. Are you saying your brakes fade after 1 hard brake? Then id agree that your stock brakes are crappy.

My stock brakes were the same as 330 i/d, 330mm front and 336mm rear.
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      02-02-2007, 11:35 AM   #61
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you don't have to have a 4 wheel kit to have no brake bias. stoptech front brake kits for the E46 330 are balanced and designed for the OE rear brakes. Now, on the other hand, if you buy a great big brembo front kit and dont get the rears that were designed to go with it your car is going to dive like it is its job.
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      02-02-2007, 02:35 PM   #62
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You still haven't fessed up to how you did all 4 corners for under 3 grand.

Sure I did.
I said that the kits I put on my car aren't available for the E90.
They are much smaller and more affordable. Comes out to around $2700 for all 4.

JL
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      02-02-2007, 04:23 PM   #63
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Ahhh ... I had just rudely assumed you were stuffing them on an e90.

So, what's the infamous JLevi drive anyway?
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      02-02-2007, 07:01 PM   #64
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Originally Posted by FirstClass View Post
Same thing in effect. Rears fade, fronts don't. Still messes things up. And as far as I'm concerned more braking power isn't needed anyway, my 328 with small brakes can get ABS to come on whenever I try.
I'm not a brake expert, but I would think that your front brakes would start to fade before the rears since they are doing more of the braking. I also never stated that more braking power was needed, and I don't think that BBK's give any real advantage over stock in that department anyway. They prevent brake fade much better than stock and they look cool, aside from that they make your wallet lighter. Are they necessary for most people?... nope, not unless you track your car seriously. I don't think a BBK messes up your braking though, I would like to see something prove me wrong though.
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      02-02-2007, 07:31 PM   #65
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Back in my day, BMW 3 Series cars didn't come with forced induction. We had to make them forced induction ourselves! You kids these days with your 335's... you've got it good![/GRAMPA STORY]
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      02-02-2007, 07:39 PM   #66
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