I recently got new rotors ( R1 blanks ) and Nismo R-tune pads. I did a bed in procedure for the pads, but now I have bronze/copper colored ring on the inside of my rotor. Is that normal?

 

that is normal, it's the area of the rotor your pads are not touching.

 

rust

 

like this?? its just rust like everyone else said.

 

they didn't treat the hat? that sucks

 

you get what you pay for....

fwiw even the stoptech "coated" rotors(1pc) don't cover the entire unswept area.

however, the oem rotors do.

 

OP, you will okay hito, simply minor rust.

 

surface rust. I painted the hats on my r1 blanks with black caliper paint.

 

^ Nice, I will do this when I change out my brake pads later this summer. I actually was too lazy to do this when I chaged out the rotors almost 3 years ago. Why didn't you get the drilled & slotted rotord from r1

 

I'm assuming we're talking about R1Concepts. If you call and tell them you have that ring, they may send you new ones completely coated in zinc. Then you just have to burn off whatever your pads are touching and you're good.

 

What's the purpose of the tool shown in post #8, and how does it work?

 

its a fender rolling tool

 

sounds like a good solution. It sucks that I got there "premium" blank, but that area is prone to rust. Should have been painted or something from the getgo.

 

Wire brush then rust converter (sold at autozone, etc)...once dry your good, or you can spray with primer.........cover studs, don't get paint on the threads..

This stuff:
http://www.autobodytoolmart.com/klea...2-p-12824.aspx


Then High temp paint or wheel paint has better additives for lasting on a rotor:


Related thread:
https://my350z.com/forum/wheels-and-...ndle-area.html

UPDATE:
see post 5 here:
https://my350z.com/forum/wheels-and-...ml#post7229635