Basically the question is would upgraded rotors/pads in the rear last through extended track use (HPDE) when matched with a front bbk? Most of the problems I have seen with overheated and worn brakes are either all oem or front issues. Non-brembo rear calipers btw. I am just worried that even stoptech/project mu/ whatever rotors would still not be enough to dissipate all the heat, but then on the rears I'm not sure how much will build up. Thanks!

 

What year is your car.

 

early '03 so I have the worst oem's i believe. I would go with an aggressive pad an all, but the heat is what worries me.

 

just upgrade to 06 to 08's with the larger rotors. So far i'm doing well with mine, i did the upgrade

 

what is your set up? what kind of usage does it see?

 

Right now i'm on stock 06's , my car is an 03. The stock 03's had a major fade issue at HPDE events to the point i over heated the brakes after 2 laps. Once i swapped over to the 06's my fade issue went away, the rear pad life also trippled. Front pad (ebc yellow ) doubled.
My car is NA, with street tires. I run 255's front and 275's rear. Soon i will have a front BBK and R comps. If your running r comps or FI it will be close with the 12.2 rotors in the rear. If you have both , just get a rear BBK IMO.

 

nah, neither fi nor r comps yet. I want to do a few more events on street tires and improve my driving before stepping up to r comps. Thing is I know in a year or so I will be on the r comps and the way I see it, pads/rotors/06 calipers will only be maybe $5-600 (or so) from a bbk. I figure two sets of pads and rotors on the '06 set up and I will have coughed up about the same as the bbk. Was looking for some oem brembos but again, same issues. Eh, something to think about I guess. Thanks for the help!

 

06 pads are the same , its just a different caliper mount, calipers are also the same FYI. Basically just bigger rotors, and the mounts.

 

huh, I thought the new ones had another piston, though maybe thats only the front? anyway, thanks again for the info!

 

He is correct about the pads.
2003-2007 non-brembo pads are the same: FMSI D0905.
Don't know about calipers.

 

Wouldn't slotted or dilled rotors cure the fading and heat buildup?

Also, you guys mention switching out 03 rotors with 06-08 rotors. Any other modifications needed for this? You got me curious now

 

Take look at Racing Brake, they offer a full line of upgrades,from replacment rotors, to OE caliper BBKs, to full blown 6 piston caliper BBKS. Prices and service are excellent.

http://www.racingbrake.com/Default.asp

 

well... rotors do make a difference, but only so much. Slotted rotors allow gas to escape better, as do drilled holes. This improves clamping performance under heat and may help clean the pads (at the cost of pad life). In the end though a slotted or drilled rotor is going to be relatively the same mass and see about the same airflow as oem rotors so cooling will be quite minimal.

If the rotors are bigger but calipers the same, you must need to switch caliper brackets to move them further from the hub. This is basically what the oem caliper racingbrake kits do. In the past I have seen this a really questionable attempt at better braking, as the actual clamping area does not increase and the pad is not properly going to be properly sized for the rotor, but if Nissan does it perhaps I've been too critical.

 

Me to , but you do get a bigger rotor that will dissapate heat better.

 

I agree with the pads not growing to the rotor size. However the rotor is designed for the new caliper location, so it is pretty much a wash. The larger rotors dissipate slightly more heat, but also provide a longer torque arm, which in theory should provide slightly improved braking affect. The internal vane design is also changed so it is supposed to offer better cooling than the stock rotors.

 

You would need a bigger/longer bracket to hold the caliper further away, but...
Rotor diameter was only increased by 1/2 inch. Probably not worth it.

 

Unless you are finding a steal on the larger 06 and up OEM brakes, it will probably fail the cost/benefit test. Better to just get an aftermarket rear BBK.

Your front brakes do by far the majority of the actual braking... I just upgraded to a Stoptech Stage II kit in back to go along with my AP 14.25" 6 piston bbk up front.

 

from your avatar I'm guessing you see track time, how have the rears held up?

 

^ Fine... I'm guessing I'll run through two sets of front pads before I have to replace the rears. The stoptech rotors and lines are nice, but I will be switching to a more agressive rear compound pad then the included axxis ones.

 

Its actually a full inch