which is the best oem rotors??

should i give up and get some advanced auto parts rotors?

http://www.partsamerica.com/ProductL...r=Disc%2fRotor

or

http://thmotorsports.com/brembo/brem.../i-129769.aspx



whats the difference???



I was going to buy some slotted rotors but, i didnt want them to cut up and devour my projecy Mu brake pads so fast.

what do you guys think?

you have brembos or the stock calipers?...that would make a big difference in how you should look....

Go with the OEM rotors you dont want any mishaps with a lower quality rotor.

Grey Cast Iron rotor quality is primarily found in the grade of cast iron [G7-G13] [hardness and ductabilty] and the amount and quality of machining and quality control.
This tutorial will help you understand:
http://www.sae.org/events/bce/tutorial-ihm.pdf

What you really want to know is which foundry poured the rotor!

holy f*ck i couldnt read that powerpoint slide, too much science for me.


yea i got brembo's. i've always heard from everyone that our OEM rotors are way soft and never last long.

Q45 - this is very interesting tech info, and good for people to understand, but realistically, no one is going to take the time to study the metallurgic properties of the rotors to the degree you are espousing. How are any of us to accurately determine what foundry poured the rotors we buy? There are only so many sources for decent rotors for our cars, and it becomes a logistical impossibility to research and determine the origin of some of these products. Even the merchants often don't know. Instead of supplying a graph from SAE, how about some concrete recommendations/options based on your experience? Thanks.

Supposedly, the Centric premium rotors are a high quality OEM replacement, and fit the Brembo-equipped coupes:

http://www.centricparts.com/prod02.htm

You can find the specific ones for our G35's here:
http://www.g35parts.com/9083/osc/pro...470abca6bac22a

now, THIS post deserves some brownie points!!!!

where did u find out about centric parts?

damn, cant fine centric rotors to buy....

i've used centric rotors on my 03 G with brembos and I highly recommend NOT to use them... breaking power will suffer dramatically as well as resisitance to fade.

PS. the rotors were drilled and slotted

Hmmm...interesting. I wonder if it was the drilled holes and slots that reduced the braking power due to loss of surface area. Drilling has little use on the street, and slots don't add much more either. For street applications, I would use a plain rotor blank.

As for resistance to fade, what pads were you using? Was this the OEM Nissan Brembo pads with the Centric rotors, or some other pad? In what condition was the fluid?

Careful Centric sells multiple grades always use the high quality Black Hat Version.

It is not my fault that Americans are so poor in Science and Math and don't know how to test materials for quality and rely on who spends marketing money or Inet/magazine shills to confuse the public.

Most upscale state and private universities have the necessary tools/test equipment to test cast iron quality.

Fade is not a function of rotors but pads and fluid overheats until the rotors start to glow red.

I was going to post about how there was no need to ask you to not post the pp and say it worthless because it was cool to see but there is for sure no need to start making generalizations that have nothing to do with anything and in turn make you look like unintelligent.

It's not a question of being poor in science and math. I have a BS in Mechanical Engineering from an Ivy League University, but I don't have the time, money, energy or desire to spend evaluating cast iron quality. The same way I don't have the time, money, desire or energy to scientifically evaluate the quality of the produce I buy, or the electronics I buy, etc. Most of us not currently working in the automotive repair field have to rely on a combination of marketing claims, reviews from non-biased sources (if available) or just reviews if not. It's just a question of practicality.