WhitewaterPearl
Member
- :
- 2006 Mazda5 Touring
...I'm a bit concern.
Our M5 has less than 2k miles on her and the brakes are exceptional, so no whining here.
I was checking the tires and brake rotor for correct wear tonight when I noticed the finish/color on the rotors didn't look uniform. Although smooth to the touch mixed in with what I considered to be a normal rotor color were darker pigment streaks. I got an LED flashlight and took a really close-up look and to my surprise the the front rotors look really grainy and had little black pinholes throughout the entire finish. I had never seen a finish like this before so I checked my other cars and the oe Subaru and the other with a set of Brembos looked smooth, shiny and uniform in color.
I'm no metallurgist but I'm guessing the density of iron used could be considered "soft" if less than ideal pressure was applied when casting/forming the stock from which the rotors were cut, (kinda like the clarity of a diamond; more earth's pressure=less imperfections).
Also, engraged on the hubs were numbers and "FoMoCo Ate". I've always heard good things about Ate brake products which will be even more surprising if this is not normal.
I'm crossing my fingers brake fade, accellerated wear, warpage, or stress fractures don't become issues as the rotors wear. Your thoughts?
Our M5 has less than 2k miles on her and the brakes are exceptional, so no whining here.
I was checking the tires and brake rotor for correct wear tonight when I noticed the finish/color on the rotors didn't look uniform. Although smooth to the touch mixed in with what I considered to be a normal rotor color were darker pigment streaks. I got an LED flashlight and took a really close-up look and to my surprise the the front rotors look really grainy and had little black pinholes throughout the entire finish. I had never seen a finish like this before so I checked my other cars and the oe Subaru and the other with a set of Brembos looked smooth, shiny and uniform in color.
I'm no metallurgist but I'm guessing the density of iron used could be considered "soft" if less than ideal pressure was applied when casting/forming the stock from which the rotors were cut, (kinda like the clarity of a diamond; more earth's pressure=less imperfections).
Also, engraged on the hubs were numbers and "FoMoCo Ate". I've always heard good things about Ate brake products which will be even more surprising if this is not normal.
I'm crossing my fingers brake fade, accellerated wear, warpage, or stress fractures don't become issues as the rotors wear. Your thoughts?
