BBK: how big?

[Autobahn335i]

Originally Posted by radiantm3

I can attest to that. I guess I just worded my previous comment wrong. I meant braking performance in general and that means at the track as that's the only place where aftermarket brakes will become useful. My stock brakes stopped just as well as my brembo 380 kit. The difference is I can run 25 minute sessions throughout the day in 100+ degree weather without a hint of brake fade.

My biggest fear at the track is having the brakes not working properly when slowing from 125mph to 30 around a hairpin turn with a wall straight ahead. Going from the 365 to 380 kit is just a tiny fraction of the cost of the whole kit so why not get the one that will most likely stand up to heat the best. At least that's my thinking.

Bigger discs will limit the choice of wheels. Not many 18" clear the 380mm kits.

Stopping power will indeed be virtually the same and heat dissipation a bit better with bigger discs. But even the "small" 355 or 365 BBKs will outperfrom any stock setup by a large margin.

[Malakas]

Originally Posted by Porschefile

Does 355/355 feel balanced still? I was worried that if I did 355/355 it would be more rearward biased than it should be.

Even though the kit is 355/355 the piston sizes are different so the standard brake bias is preserved. I spoke with Stop Tech at length about this prior to purchasing. I went with front/rear kit simply to have a good all around solution to combat fade on these relatively heavy track cars. In terms of stopping "power" there is little difference. In terms of brake feel - the ST kit reminds me of my 996 4S which may be mostly due to the stainless lines and fluid...

[Porschefile]

Cool, good to know. I hope to get a bbk this fall, almost certainly stoptech.

[aus]

Originally Posted by Autobahn335i

Bigger discs will limit the choice of wheels. Not many 18" clear the 380mm kits.

Stopping power will indeed be virtually the same and heat dissipation a bit better with bigger discs. But even the "small" 355 or 365 BBKs will outperfrom any stock setup by a large margin.

Many people who got the ST 380mm front kit got the APEX wheels. Their new wheel will even accept the Brembo 380mm BBK up front now.

.

[radiantm3]

Originally Posted by Autobahn335i

Bigger discs will limit the choice of wheels. Not many 18" clear the 380mm kits.

Stopping power will indeed be virtually the same and heat dissipation a bit better with bigger discs. But even the "small" 355 or 365 BBKs will outperfrom any stock setup by a large margin.

Yea I planned all that out before going with the 380 kit. 18" TE37sl's.

[CSanto]

Originally Posted by radiantm3

Yea I planned all that out before going with the 380 kit. 18" TE37sl's.

I'm pretty much trying to copy everything about your car. I just bought yellow brembos. =)

There isn't a nicer AW on the forum.

[MTROIS]

I am currently debating on the same items, and after my discussion with Dave Zeckhausen, the following additional advantages of the front ST-40 vs. ST-60 would include:

- ST-40 is lighter (almost 3 pounds for calipers + rotor per corner)
- and you can rotate your pads front to rear if you also install the rear BBK

I am almost set on the ST-40 in the front as I think that the ST-60 is an overkill (given my current driving skills... for sure! One has to be humble....)

[uplusd]

Go 380