Ben, Yes, the more weight applied across less area, the more squash. Force (corner weight when sitting still)= Pressure x Area

 

Tim,

Are you all of a sudden an expert just because you read Stoptech's white papers and spout off their pseudo-engineering BS? I guess so, since you are one of the few Porsche owners who actually bought into their horse****.

You use general terms like "ANY normal conditions." What is a normal condition? For some of us, normal means pounding the canyons day in and day out, meaning repeated stops and trail braking. Oh wait, you're in Chicago, where there are no canyons.

In answer to your questions in an attempt to condescend me, I do not know the exact piston diamters (I believe they are of 2 different sizes in each caliper) of the GTR 8-piston calipers, do you? I believe they are in fact smaller than even the 6 pistons on my PCCB caliper, but the reason why the brakes have more "bite" is due to its 4-pad configuration and large swept area, which makes it stop like a dual caliper system.

Obviously, larger pistons in the front will create more front bias for the brakes, however, the GTR was designed as a FRONT AND REAR system, not just a front system.

In theory, the stock ABS system can be confused if the deceleration figures as provided by the wheel sensors far exceed that of the stock brakes. However, no one has proven this to be true on the GTR system or any other Brembo kit for that matter. After all, the actual stopping distance of these brakes are dependent on the types of pads used. Also, the braking distances are probably within the range of the stock PCCB, as the ceramics stop incredibly well.

As for tire traction limitations, once again you are assuming a single variable. If one uses Michelin PS2 vs. Cups or Corsas or even Hoosiers, there will of course be a difference in contact patch, adhesion characteristics, and ultimately stopping distance. Did you know that a LOT of guys out here use Corsas and Cups for "normal" conditions? So tell us, Tim, are these R-compound tires also a limiting factor for Brembo race brakes and by how much? Do you braking data isolating tires as the variable? Tires will always affect braking, even when they are NOT the limiting factor, i.e. inferior brakes with better tires make for better braking than inferior brakes with ****ty tires. So to simply say that big brakes are worthless because tires are the limiting factor is such a blanket statement.

Then there is the issue of suspension setup. Depending on your suspension settings and geometry, this can also play a part in weight transfer, and ultimately, stopping distance. If one has a modified suspension set up for race brakes, will race brakes STILL be useless for "normal" conditions?

Does the massive reduction in unsprung weight between stock steel brakes and the GTR brakes make any difference in braking?

Again, what are NORMAL CONDITIONS, Tim?

By the same argument, suspension mods are useless for normal driving too, right? Well, I guess not if you drive like me, Watt, or other people out west.

Ultimately, if you'd like to test your Lambo's braking against the Carrera GT or my GT2, you are more than welcome to. Your Countach wouldn't even last an entire canyon run trying to keep up with us.

 

cuz you know in those canyon runs a.k.a public roads, shared with moms driving their kids to practice, teenagers heading to their friends houses for sleepovers, governed by the very same laws as any other road....

.....is where no-talent-***-clowns-can't-make-a-living-off-of-my-driving-skills-like-the-rest-of-the-driving-public on internet car boards challenge others to fulfill quixotic visions of their very personal High Noon automotive showdown fantasies

 

I have nothing to say to you, ricer boy. Go back to the Honda forums where you came from and talk **** when you can afford one of these cars.

 

I think I shat myself.

 

Hamann, forget about Conan taking over after Leno, you should get that job. You're just too damn funny

(I don't mean you're funny when you offend people or call them names, but your way to express your opinion are just pure entertainment, but not very pc though)

 

weak sauce

 

hope it's on jenny craig's approved list for ya there bud

 

Why disparage someone for mentioning the joy of driving in the canyons? Am I to assume you have never exceeded speed limits or broken traffic laws in your lifetime? How many mothers travel secluded canyon roads on their way to soccer practice? How many teenagers drive through canyons to attend sleepovers? Your argument is completely illogical.

 

I stopped reading at this post cause I have too much work to do to keep reading the rest of the thread. Ben I have been in support of the CGT every time and I still am. But Tim is making valid points. His statements about tires are right on and i agree with most of what he is saying. Do I think his lambo has the same brake abilities around a track as the CGT, NO! but we were debating how hard the car brakes in one stop on the street(all started with the guy not wearing his seat belt lol ) Anyways, lets stop arguing and give me a ride in the CGT. Actually Tim, you live nearby me so how about a ride in the lambo?

 

also i just got done watching that video. I was laughing the entire time. You guys are pimps, walked into the dealership in t-shirts and drove around in a CGT. Very nice

 

Why doesn't someone organize a friendly shootout between these different cars and settle these difference of opinions.

 

That's what I say too. Let everyone have a chance to ride shotgun in each other's car unbelted and see who gets the biggest lump on the head at the end of the day.

 

well I did a little bit of thinking as to the acceleration of these cars and to why it will take a lot from a turbo to hang with or beat one.

The power to weight on the CGT is 4.97lbs/hp

whereas the power to weight on a turbo is 8.19lbs/hp

a stage 4 turbo 600hp is still 5.63lbs/hp

it will take 700 hp for a turbo to surpass the gt's power to weight to give it a 4.86lbs/hp

And this isn't even considering gearing and aerodynamics. I would say you need at least the evo 750 package to out accelerate it(4.33lbs/hp). And to outbrake it you would need considerable suspension mods as well as a larger brake upgrade.

In the end of the day, it's a sick car and will be a force for even the fastest turbos and cars for that matter to reckon with.

 

In a month or so my turbo will be finished. It weights 3092 pounds. It will redline @ 10,000 rpm's. It has a few more ci's than a stock turbo, but not as many as the CGT. It should have a hp/weight ratio of about 2.6 to 1. The gearing will be almost identical to the CGT's in all gears. It does have a very considerable suspension mod and tires have a width that will more than match. The brakes come directly from a GT3 RS.

I'm sure given a little time we'll run into one that wants to play.

By the way, I am a fan of the CGT. It is a great car abeit a little different. I hope to own one sometime in the future.