Correct, drift is not nearly as brake intensive as time attack trial but still much more than average street driving.

That is also why I posted the Rare JDM circuit car, which has nothing more than upgraded pads, SS lines, and RBF.

 

Still, comparing purpose built track cars, 200mph supercars, and fictional video game scenarios have nothing to do with topic of discussion. The point being, a big brake kit will have absolutely no improvement on stopping distance for a normal street driven G35. Anyone who claims otherwise is incorrect.

-Stopping distance is determine by tires, not brakes.
-Brake fad is caused by improper pad material, not small rotors.
-RBF fluid and SS lines in a stock system is more than capable of handling any braking done by 99% of the members of this community.
-BBKs on a street driven G35 is nothing more than a cosmetic modification.

 

He's trying to make the case where a BBK can fade in a 1 stop brake situation. In theory, it can happen for reasons explained. If you'd just agree with this, it would stop the discussion about it

 

Again, brake fade is a function of pad material and has nothing to do with size of the brakes. Even 12 piston calipers, with 15 inch rotors and cheap ebay pads could experince brake fade sooner than oem brakes with upgraded pads.

It is not possible to induce vapor lock in a stock brake system with a single stop.

 

I never discussed the individual parts. Funny in order not to admit that in theory a BBK could fade, you are now going to into the same semantics battle you were complaining about.

 

He's saying it is possible, if you're at a speed high enough to require the brakes to have to work long enough. I suppose a very long and steep hill might be a better example. As semis often exceed their factory braking systems if they don't employ engine braking to take the burden off the brake system

But it's his argument, not mine. Carry on

 

If you actually read the topic of discussion, you would see I said braking is more than just brake size. The weak link is what always fails, so individual part discussion is just as important to determine the overall performance of a brake system. It isnt a semantics battle. I am clearly stating that pad material and brake fade have nothing at all to do with size of the brakes. I also very clearly state that the size of calipers/rotors has absolutely nothing to do with stopping distance. How you do guys keep missing the basic concepts?
Stopping distance is determined by the coefficient of friction of the tires as well as contact patch.
Brake fade is determined by material of the brake pads.
Vapor lock is determined by thermal capacity of system (including ability to dissipate heat (size and material of the rotors) and fluid boiling point).

Please keep your ignorance and selective reading in the political section.

 

http://www.stoptech.com/docs/media-c...raking-systems

StopTech agrees that stopping from 120-60 generates 4 times the heat of a 60-0 stop.

 

This is what I read from CU. You went out of your way not to really address what he said. run around 2.0. Logic would say that he's implying all the pad materials are of similar performance and that only the BBK hardware is changed. ie.. calipers, rotor size etc..

 

For the thousandth time now. Brake fade is determined by the pad material and is independent of rotor size. Heat generated is a function of the coefficient of friction of the pad and rotor, as well as the rotor material.

A test was done between the stock Brembo brakes and Stoptech upgraded BBK.

The car through twenty back-to-back stops, the first ten from 60mph, followed by six stops from 80mph and then four stops from 100mph.. Each time the car stopped, the rotor temperatures where measured and then sent the car around for another pass. After 20 passes on stock brakes, Stoptech front 332mm BBK was installed and test done again.

After 20 repeated stops, no brake fade was recorded. There was almost no difference in stopping distance. And the Stoptech BBK recorded much higher temps than the stock Brembos due to material difference of the rotors. While the tires were the same, each test did have different pad material and friction coefficients (brembo vs stoptech) so it still isn't a true 1-1 comparison.

Brembo avg 60-0 stop distance - 117.3 ft
Brembo avg 60-0 rotor temp - 371 F
Brembo avg 80-0 stop distance - 208.7 ft
Brembo avg 80-0 rotor temp - 395 F
Brembo avg 100-0 stop distance - 328.3 ft
Brembo avg 100-0 rotor temp - 477 F

Stoptech BBK avg 60-0 stop distance - 115.8 ft
Stoptech BBK avg 60-0 rotor temp - 436 F
Stoptech BBK avg 80-0 stop distance - 206.7 ft
Stoptech BBK avg 80-0 rotor temp - 418 F
Stoptech BBK avg 100-0 stop distance - 326.9 ft
Stoptech BBK avg 100-0 rotor temp - 510 F

 

 

Thanks for that. But it said that doubling speed will quadruple brake temperature, meaning that a 120-0 stop will generate 4 times the heat as 60-0 stop. It doesnt say anything about 120-60. Deceleration rate is not constant so it is actually pretty difficult to determine the work done from a 120-60 braking event. I really don't feel like doing to the math to show what the difference in heat generation would actually be. Also it doesn't account for the higher heat transfer to the air due to higher velocity.

Without doing the math, I cannot accurately say how much more heat would be generated. But main point of this thread is still that larger brakes do not improve stopping distance and OEM brakes are more than capable of handling the demand of a street driven G35. BBKs on a G35 is purely a cosmetic modification.

 

This topic has been derailed. It was assumed everyone here had street driven G35s. Yes if you own a supercar or a dedicated track car, then this topic doesn't really apply to you. Point was, if you own a street driven G35, a BBK will provide no performance value.

If you want to improve your stopping distance, get better tires.
If you want to reduce brake fade, get better pads.
If you want to prevent vapor lock, get better brake fluid and lines.
If you want to improve visual appearance of your car, get a BBK.

 

but bbk makes my car soooo pweeeety. what will i tell my wife, its just there to be pwetty not so we can stop moar? THEM LIES!

 

Concise is nice.

You might want to edit these bullets into the original post to spare those that may follow the struggle of reading the whole thread....