ECS 306mm rear brake upgrade?

[johnkent1212]

I was thinking of doing the ECS tuning 306mm rear brake upgrade. I was wondering if anyone has done it and what the opinions were? In addition any pics? Thanks.

[blmlozz]

go 034 or go home.. don't mess with the floating ecs rotor crap. You don't need anything bigger than the S8 rotors anyway unless you plan to make it a deticated track car. To answer your question on has anyone done it, a quick search will find a number of people having problems with loose hats and bad ECS service.

[johnkent1212]

yeah but I also found a thread about 034 and fitment problems.

[blmlozz]

yeah but I also found a thread about 034 and fitment problems.

Very little grinding is required, yes. However I would rather use an oem rotor that can be bought anywhere for cheap rather than a one-off design that costs $100s and has to be ordered online.

[Shomegrown]

The ECS rotor isn't "crap". And it will take years of hard use to wear out a rear rotor.

I'd bet it's lighter than the S8 rotor too because of the aluminum hat.

[johnkent1212]

The ECS rotor isn't "crap". And it will take years of hard use to wear out a rear rotor.

I'd bet it's lighter than the S8 rotor too because of the aluminum hat.

Do you have it?

[Shomegrown]

Do you have it?

Yep.

[GramCracker]

^^^^^ Nice car.

[unknowna4]

Both 034 and ECS rear brake kits have their problems, imho go stasis if you want quality(I have them and love them!)

[Sleeeper X]

Sigh....

034 is the way to go you get a 320mm rotor. Even though you cant use the full rotor the larger size of the rotor disperses heat quicker then the stock rotor. If you want to spend money on a rear BBK look on www.rs246.com theirs a write up on getting B6 s4 rear calipers and rotors to work on a b5

[Shomegrown]

Sigh....

034 is the way to go you get a 320mm rotor. Even though you cant use the full rotor the larger size of the rotor disperses heat quicker then the stock rotor. If you want to spend money on a rear BBK look on www.rs246.com theirs a write up on getting B6 s4 rear calipers and rotors to work on a b5

To be honest, I can't see anyone having a heat issue with the rear brakes. Our weight distribution just doesn't put much load back there under hard braking.

I've worked the brakes harder than 90% of S4 owners out there, and the rears don't need much help.

However, you might want to upgrade the rears just to keep balance in check as a front BBK can change your brake bias.

Not to mention looks, although that was minor reason for me.

Let me put it this way, I would begin to crack the front rotors (cross-drilled) after just a few 180+ mph hard stops (ECS Stage 4). I went through two cross-drilled front rotor sets and one slotted front rotor set. All trashed.

The rear brakes are cross drilled, don't have a single crack, and haven't even changed the pads yet (they were installed at the same time).

[johnkent1212]

Yep.

Do you have any pics of the rear brakes up close? BTW very nice, clean, car

[Shomegrown]

Thanks.

I've got some more pics, but I don't think I have any of the rear brakes...

http://www.pbase.com/nogaroblue/s4&page=all

http://www.pbase.com/nogaroblue/most2006&page=all

Give me a few days and I'll snap some for you.

[Sleeeper X]

well, how can you change your brake bias by changing your rotors? How can heat affect your rear rotors. Have you ever driven on a track?

[Shomegrown]

Here, I found one I hadn't posted yet. Is this good?

[Shomegrown]

well, how can you change your brake bias by changing your rotors? How can heat affect your rear rotors. Have you ever driven on a track?

I might have taken the S4 on a track a time or two...


Rotor diameter has a huge effect on brake bias. Increasing the rotor diamter increases the effective lever arm you have on braking force. That's just like how a longer wrench or a cheater bar applies more torque to a nut you're trying to loosen.

If you buy a BBK on the front, you may shift your braking bias forward due to piston diamter changes, rotor braking torque changes, or pad compound changes.

Adding a larger rotor in the rear can help balance this.

ECS has made a spreadsheet explaining it, though I haven't double checked their numbers. Don't hold me to them. I can verify though my car was more balanced after I added the larger rear rotors.

As I said, heat and fade is not an issue on our rear brakes. I've never heard anyone complain about this, and I've never had a problem over 6+ years of running an S4 hard.

[skunkoncrunk]

Hey Shomegrown, not until I saw this pic did I realize who you were and then I noticed the plates.



You have a couple of great You Tube videos. Like the one where your on the Nuremberg Ring and I believe you have another one where your going flat out on the Autobahn.

Nuremberg Ring video:

http://www.youtube.com/watch?v=-RS8yrjWelM

Great song too.

[GramCracker]

Hey Shomegrown, not until I saw this pic did I realize who you were and then I noticed the plates.



You have a couple of great You Tube videos. Like the one where your on the Nuremberg Ring and I believe you have another one where your going flat out on the Autobahn.

Nuremberg Ring video:

http://www.youtube.com/watch?v=-RS8yrjWelM

Great song too.

WAIT. That's shomegrown?!?!?! OMG. I didn't even know.

Your car is awesome, however I did prefer the RS4 rims. But that's all your choice.

[Shomegrown]

lol,

Well, that NOT me in the picture. That's just my car y0.

I run the B5S4 rims in the winter and B7RS4 rims in the summer.

[skunkoncrunk]

lol,

Well, that NOT me in the picture. That's just my car y0.

I run the B5S4 rims in the winter and B7RS4 rims in the summer.

Hahaha, I just remembered that pic from the movie so I was able to put two and two together.

I couldn't find the one of you going flat out though.

[BITRBO]

You have a couple of great You Tube videos. Like the one where your on the Nuremberg Ring and I believe you have another one where your going flat out on the Autobahn.

Nurburgring video:

http://www.youtube.com/watch?v=-RS8yrjWelM

Great song too.

Diddo. As a matter of fact, his were some of the first B5 S4 vids that got me hooked on these cars ... Nice Noggy Shomegrown

p.s. fixed

[johnkent1212]

Here, I found one I hadn't posted yet. Is this good?

Yup. Good enough atleast. Looks great. I'll probably do that kit. I have a front bbk and I need the rears to improve the bias distribution.