Anyone running Stoptech 355MM 4 Pot on the front?

[JustAnothaM4]

Stoptech is king if you are going to be using the setup on the track. If you ever decide to get the rear setup you will be able to swap the pads from front to back since the st40 caliper is the exact same (piston sizes are different)! That is the biggest benefit ever!!!! Saves you money as pads are not cheap for a bbk.

[Gary_C]

Originally Posted by BimmerRob08

But anyway, so will the 365/6pot & 345/4pot Brembo's fit clear of my 18"s then? Are you guys running any spacers?

Cheers,

Yes, the Brembo 365mm (F) and 345mm (R) was specifically developed around the ability to utilize the OEM 18" wheels without the need for spacers.

There's quite a few posts going around on this board right now about this kit, the ability to use 18" wheels, and the question of whether it can be used as front only or if you need a rear.

[1MORELAP]

Originally Posted by Jaypod

Just like the title states, looking at BBK options and run OEM 18's for both winter and track so clearance is an issue. I have looked into both the AP Racing and Brembo kits as well but just noticed Stoptech has a 355mm 4 pot front brake option. Any feedback would be appreciated although how these perform at the track is important.

Why?

If you want bling go bigger and 4 corners. For performance, I am pretty sure that proper pads is all you need.

[FrenchBoy]

Interestingly, the Trophy page on StopTech website states that the STR 40 (i.e. 4 piston setup) is the "same caliper used by top Speed® World Challenge and Grand-Am Cup Teams". Not the STR 60

http://www.stoptech.com/Products/trophy.shtml

Is this some kind of regulation or do race teams prefer 4-piston over 6-piston, and why?

[rzm3]

Originally Posted by FrenchBoy

Interestingly, the Trophy page on StopTech website states that the STR 40 (i.e. 4 piston setup) is the "same caliper used by top Speed® World Challenge and Grand-Am Cup Teams". Not the STR 60

http://www.stoptech.com/Products/trophy.shtml

Is this some kind of regulation or do race teams prefer 4-piston over 6-piston, and why?

It's per regulations. Only 4 piston fronts are allowed.

[aus]

Originally Posted by 1MORELAP

Why?

If you want bling go bigger and 4 corners. For performance, I am pretty sure that proper pads is all you need.

Not the case with our cars for good drivers. The stock brakes are just not up to the challenge regardless of pads, fluid and brake line upgrade.
An SEVERE example was posted by JuniourM3, who's a professional race car driver, who literally cooked his brakes, and he had ducts on too. He had no warning when the brakes failed.

[elh0102]

Originally Posted by aus

Not the case with our cars for good drivers. The stock brakes are just not up to the challenge regardless of pads, fluid and brake line upgrade.
An SEVERE example was posted by JuniourM3, who's a professional race car driver, who literally cooked his brakes, and he had ducts on too. He had no warning when the brakes failed.

Well, I'm not sure it's totally fair to say the brakes are not adequate for "good drivers" on track. The brakes are fine, up to their limit which, of course is not as high as with the best race-ready brake systems. The OE system can certainly be pushed beyond its practical limit, and just as easily by a lesser skilled driver. Your point is well taken, but competent drivers can enjoy the car on track without burning up the brakes; just a matter of choice, and one of the many compromises one makes in casually using a street car on track.

[FrenchBoy]

Originally Posted by rldzhao

It's per regulations. Only 4 piston fronts are allowed.

If 4-piston brakes are good for the World Challenge cars to go racing, they are probably good for my track days then ;-)