380mm ECS stage 2 RS5 big brake kit...or 365 true float ECS rotors

[chrissurfr]

Hey guys....

I'm finally going to put my OEM brake issue to rest. Which do you think is the better option?

Thanks,
Chris


https://www.ecstuning.com/Audi-B8_RS...ors/ES2785596/

https://www.ecstuning.com/News/Audi_...014/ES2793048/

[ICU2]

Debating the same issue w/mine. Since mine is a bit heavier being a "Cab" it's a no brainer for me. Going w/ the 380. IIRC "supserswiss" has had ECS on his for some time now w/favorable usage/results.

Hey guys....

I'm finally going to put my OEM brake issue to rest. Which do you think is the better option?

Thanks,
Chris


https://www.ecstuning.com/Audi-B8_RS...ors/ES2785596/

https://www.ecstuning.com/News/Audi_...014/ES2793048/

[yjypm]

Definitely get the 380mm, wave rotors are just for the looks

[ECS Tuning-Audi]

Definitely get the 380mm, wave rotors are just for the looks

Not completely. There are some weight savings to be had from the design.

Jason

[big_greasy_taco]

are you at all worried about front / rear brake bias? - upgrading to a larger front rotor (380mm) and leaving the rears alone would shift brake bias frontward... assuming you keep everything else the same

[JamesRS5]

are you at all worried about front / rear brake bias? - upgrading to a larger front rotor (380mm) and leaving the rears alone would shift brake bias frontward... assuming you keep everything else the same

I believe brake bias is controlled by the pitch angle of the car so the bias will remain unchanged, I didn't do anything when I fitted ceramics and even with some high speed braking, it's never felt like it was about to swap ends.

I would go for the 380mm conversion, they are directionally vented rotors so cooling isn't a worry as it is with the standard brakes and size is important when it comes to stopping power. Plus asthetically they will look mean behind the wheels, they will really fill it out.

[yjypm]

Not completely. There are some weight savings to be had from the design.

Jason

Considering the total wheels and rotors, 2 lbs isn't a big deal.
I'm also wondering, do you sell 380mm rotors and caliper carriers alone? I already have the rs5 bbk and considering 380mm rotors but don't want to waste $$$ on brake lines and pads (I already have some new ones)

[big_greasy_taco]

I believe brake bias is controlled by the pitch angle of the car so the bias will remain unchanged, I didn't do anything when I fitted ceramics and even with some high speed braking, it's never felt like it was about to swap ends.

I would go for the 380mm conversion, they are directionally vented rotors so cooling isn't a worry as it is with the standard brakes and size is important when it comes to stopping power. Plus asthetically they will look mean behind the wheels, they will really fill it out.

Brake bias is mechanical in nature - diameter of rotors, size of master cylinders, brake pad compound, etc... mathematically, changing the rotor diameter changes the bias

[ICU2]

Forgot ~ this issue, yet another reason to go 380mm. And if we're being honest, I doubt MOST of the RS5 drivers would ever drive their car hard enough, routinely enough to appreciate the difference. If James RS5 hasn't noticed it w/ upgraded Ceramics all around, I doubt many of us would. Is it notable from a mathematical stand point, I suppose so but actually noticeable day to day driving, doubtful. Just my humble opinion.

I believe brake bias is controlled by the pitch angle of the car so the bias will remain unchanged, I didn't do anything when I fitted ceramics and even with some high speed braking, it's never felt like it was about to swap ends.

I would go for the 380mm conversion, they are directionally vented rotors so cooling isn't a worry as it is with the standard brakes and size is important when it comes to stopping power. Plus asthetically they will look mean behind the wheels, they will really fill it out.

[JamesRS5]

Brake bias is mechanical in nature - diameter of rotors, size of master cylinders, brake pad compound, etc... mathematically, changing the rotor diameter changes the bias

Static bias yes absolutely, but dynamic bias is controlled by the pressure applied to the individual wheels.
These Audis have each wheel velocity monitored so any onset of a wheel locking up and the pressure is reduced to that wheel and any yaw induced by this is also kept in check by the system adjusting the other brakes, we're years ahead of brake bias valves now, these modern computers are making inputs long before you will feel them through the seat of your pants.

I would only ever be concerned uprating the rear brakes and not uprating fronts but in this case we're only talking a small increase in front rotor diameter. Now ok, increasing the front braking effort means the fronts will do more work but these are better designed rotor so will cool much more effiently and let's be honest, this is a road car, the guy just wants to get rid of the crappy, poor designed standard Audi rotor, these won't be glowing red in a 24 hour endurance race.....I hope!

[ians]

So anyone ever try and any review on the 380 rotor from ECS? I dun meant not to trust ECS but not trust anything that made in china in general!

[ECS Tuning-Audi]

Considering the total wheels and rotors, 2 lbs isn't a big deal.
I'm also wondering, do you sell 380mm rotors and caliper carriers alone? I already have the rs5 bbk and considering 380mm rotors but don't want to waste $$$ on brake lines and pads (I already have some new ones)

Weight savings is weight savings!

I have a request in to assemble a kit for just the rotors, caliper carriers, and hardware. Once it is available I can PM you a part number.

Jason

[wildtouch83]

I have the tru-float rotors...if I'm not mistaken, ECS designed them with directional cooling vanes as well. And, there are more than the OE wave brake rotors.

I paired them with EBC Red Stuff pads. I have yet to get these suckers to fade under some repeated abuse. Just my $.02 though.

[mufflerman]

Considering the total wheels and rotors, 2 lbs isn't a big deal.
I'm also wondering, do you sell 380mm rotors and caliper carriers alone? I already have the rs5 bbk and considering 380mm rotors but don't want to waste $$$ on brake lines and pads (I already have some new ones)

2lbs of unsprung weight is a big deal. The most important area of weight reduction on a car is anything the suspension has to move up and down, ie unsprung weight. The second is the roof and the third is the overhangs.

[yjypm]

2lbs of unsprung weight is a big deal. The most important area of weight reduction on a car is anything the suspension has to move up and down, ie unsprung weight. The second is the roof and the third is the overhangs.

2 lbs from the brake disks are not as much of a big deal as from the wheels because the further the weight locates the more important it is. And also, the unsprung weight of each corner includes wheels & tire, brake disk, center hub, etc, in total of at least 80 lbs. 2 lbs is just negligible.
Btw IIRC Europrice sells titanium lugs for $699 which will save >1 lbs each corner but I don't see anyone here have them.
Don't get me wrong, I love the wavy disks but just for the looks. Heavier disks have a little bit more heat capacity also, but just as negligible as the weight advantage.

[ICU2]

IIRC @JamesRS5 paid the extra $ & installed the titanium lugs w/his upgraded brakes or when he went w/the wheels, can't remember which.
Negligible weight difference, yes, BUT weight savings can only help performance.

2 lbs from the brake disks are not as much of a big deal as from the wheels because the further the weight locates the more important it is. And also, the unsprung weight of each corner includes wheels & tire, brake disk, center hub, etc, in total of at least 80 lbs. 2 lbs is just negligible.
"Btw IIRC Europrice sells titanium lugs for $699 which will save >1 lbs each corner but I don't see anyone here have them."
Don't get me wrong, I love the wavy disks but just for the looks. Heavier disks have a little bit more heat capacity also, but just as negligible as the weight advantage.

[JamesRS5]

IIRC @JamesRS5 paid the extra $ & installed the titanium lugs w/his upgraded brakes or when he went w/the wheels, can't remember which.
Negligible weight difference, yes, BUT weight savings can only help performance.

That's right, it shaved off 1lb total from the unsprung weight through the bolts but my goal was to reduce as much weight as possible while still fitting a larger wheel. The 21" wheels were approximately 6lbs lighter per corner and the ceramic brakes shaved off almost 50% of the original cast brakes. Its the most significant improvement I've made to the cars performance.

yjypm, yes, rotational mass has an effect on acceleration and deceleration so the further out from the wheel center the mass is reduced, the less torque it requires to rotate the mass. However, a reduction in unsprung mass not only improves the acceleration and deceleration of the wheel, it also allows the suspension components to operate much more efficiently so any reduction in weight/mass will be beneficial and a saving of 2lbs is definitely beneficial.

[PLAYRZ]

Do ESC plan to offer a matching rear Tru-Float design rotor for the RS5? If so, I'd opt for a matching front/rear set.

[ECS Tuning-Audi]

Do ESC plan to offer a matching rear Tru-Float design rotor for the RS5? If so, I'd opt for a matching front/rear set.

Actually keep an eye on your e-mail today if you are subscribed to our news letter ;)

Jason

[ICU2]

Ok, I'll bite, what ~ those of us "not" on the e-mail list? What, pray tell, might the e-mail reveal? Just please, don't do what some other sponsors do, tease a product & release date, then have an endless litany of delays/excuses ~ the release/product/price, etc....

Actually keep an eye on your e-mail today if you are subscribed to our news letter ;)

Jason

[mufflerman]

2 lbs from the brake disks are not as much of a big deal as from the wheels because the further the weight locates the more important it is. And also, the unsprung weight of each corner includes wheels & tire, brake disk, center hub, etc, in total of at least 80 lbs. 2 lbs is just negligible.
Btw IIRC Europrice sells titanium lugs for $699 which will save >1 lbs each corner but I don't see anyone here have them.
Don't get me wrong, I love the wavy disks but just for the looks. Heavier disks have a little bit more heat capacity also, but just as negligible as the weight advantage.

All due respect, anyone that says weight savings of 8lbs total off of unsprung weight is negligible has no experience setting up performance suspension. Imagine doing 25-30 min of shoulder lifts with 80lbs, hard yes, maybe impossible depending on your physical condition (for the record I'm sure I could not). Now add 4lbs to each shoulder, I guarantee you'd notice it. My point behind this is this is what your suspension has to deal with, I suppose it could be considered negligible if you were to add 8lbs to sprung weight. Adding that same 8lbs to a backpack you're carrying and it would be far less apparent.

There is reason Ferrari and Porsche do little things to their special models like titanium wheel bolts, it does matter.

[ECS Tuning-Audi]

Ok, I'll bite, what ~ those of us "not" on the e-mail list? What, pray tell, might the e-mail reveal? Just please, don't do what some other sponsors do, tease a product & release date, then have an endless litany of delays/excuses ~ the release/product/price, etc....

We are releasing our rear tru-float 2-piece wave rotors for RS5. They are already on the website in stock ready to purchase.

Jason

[chrissurfr]

380mm wavey rotors would be cool :)

[ICU2]

VERY NICE!!

We are releasing our rear tru-float 2-piece wave rotors for RS5. They are already on the website in stock ready to purchase.

Jason

[chrissurfr]

Just ordered the 380 mm kit.... nice 10% discount on the ECS website today :)