There's a reason why I put performance in quotations. Everybody I talk to who has cross-drilled large-diameter bolt-on rotors talk about how they improved their stopping time by 10 minutes, blah, blah, and I always call b.s. on it and told them it was merely just for looks which, of course, made them mad but it seems I was right. I will be using this article as a "I told you so". Anyway, it's an interesting read.

http://superchargersonline.com/content.asp?ID=98

5/15/2007 10:05:07 PM

i need you to come cut my back yard man, its like vietnam back there.

5/15/2007 10:15:20 PM

Quote :

"But bigger rotors do not stop the car. What a bigger rotor will do is lower the overall operating temperature of the brakes "

i would have to disagree

5/15/2007 10:19:31 PM

^I would have to disagree as well.

Bigger rotors effectively create a larger moment on which the brake pads act. More stopping leverage.

Heat soak is purely secondary here.

5/15/2007 10:21:11 PM

friction stops cars, friction equals heat, brakes that are more efficient make less heat and stop cars more easily

the reality is that very few cars need huge brakes. a 7000 pound rolls royce is one of those cars.

5/15/2007 10:23:31 PM

BETTER AND WIDER TIRES STOPS YOUR DAMN CAR

niggers and their big brake kits

[Edited on May 15, 2007 at 10:28 PM. Reason : ]

5/15/2007 10:25:20 PM

i would agree that proper tire width is important to have enough braking traction, cause without traction your brakes dont mean shit.

5/15/2007 10:27:07 PM

^^^^ & ^^^^^ how many times do you see these "big brake kits" with larger pads? if you increase the rotor size without increasing the pad size, then the contact patch is the same as stock.

[Edited on May 15, 2007 at 10:27 PM. Reason : -]

5/15/2007 10:27:22 PM

as ^^^ said...doesn't matter how big and badass your brakes are...if you got shitty contact to the ground you aren't stopping

[Edited on May 15, 2007 at 10:28 PM. Reason : ^^]

5/15/2007 10:27:54 PM

Quote :

"if you increase the rotor size without increasing the pad size, then the contact patch is the same as stock"

yeah but the force is applied to a longer arm = more torque

also, even if pad surface area is the same, pad comes into contact with a longer "strip" of the rotor for every paticular number of the revolutions of the wheel

think about baking on a mountain bike and a bmx bike. they use identical brakes, levers pads and all, the only difference is the rim ("rotor") size. mtbs and roadbikes have A LOT more stopping power. and they barely heat up at all so afficient heating/cooling would not explain this phenomenon

[Edited on May 15, 2007 at 10:32 PM. Reason : .]

[Edited on May 15, 2007 at 10:34 PM. Reason : .]

5/15/2007 10:30:45 PM

Quote :

"^^^^ & ^^^^^ how many times do you see these "big brake kits" with larger pads? if you increase the rotor size without increasing the pad size, then the contact patch is the same as stock. "

Uhhh...Brian, you missed the point, man.

Simple summation of moments about the axis of rotation.

Granted, you are limited by tire contact patch and the coefficient of static friction between said patch and the road (governed by tread compound).

With bigger rotors, you can accomplish more work with the same pad. Think "lever" ... the bigger the pry bar you have, the easier it is to move a stubborn object.

5/15/2007 10:31:39 PM

^^& ^which is why it would run cooler.



[Edited on May 15, 2007 at 10:33 PM. Reason : -]

5/15/2007 10:31:43 PM

i did a brake job on a '06 supercharged range rover the other day, it has huge 4 piston bembo calipers on the front and something like 11 or 12 inch rotors. in comparison a 94 Rolls has TWO of those big ass calipers, one before and one after the rotor centerline, and EIGHT brake pads on each front wheel.

5/15/2007 10:31:48 PM

5/15/2007 10:40:13 PM

big brake kit will not accomplish anything if you dont have tires to match.

if you are locking up your stock brakes, what you thinks gonna happen with bigger brakes and nothing to get traction with.

i want red calipers

5/15/2007 10:54:03 PM

interestingly, when i changed my wheel size from 15 inch to 17 inch, my traction got noticeably weaker, especially on the cornering.i do run higher presure in the new tires, but my old bald ass 245? all seasons or whatever they were held traction better than new 215 "street performance" kumhos

5/15/2007 10:59:01 PM

Compliance, man. Shorter, stiffer sidewalls transfer shock loads much more efficiently. Impulse loading is much more likely to initiate the transition from static friction (traction) to kinetic friction (sliding).

5/15/2007 11:01:41 PM

^^smaller sidewalls isn't a good thing =P

5/15/2007 11:10:01 PM

oh well. they were a tdub special and they look pimp. also must pe pretty quality wheels cause ive been hittin some serious potholes and hasnt had one bend or crack.

5/15/2007 11:21:51 PM

dont forget you ran the trails at uwharrie with them

5/15/2007 11:24:53 PM