Just got an email from Rich @ RotorPros. He is sending me new front rotors. 
Your Best Guess?
Thread Starter
Drifting
Joined: Apr 2005
Posts: 1,263
Likes: 0
From: Bealeton Virginia
Your Best Guess?
I am communicating with RotorPros about this and have sent this pic to them. It is not brake dust. 
It can sit without having been driven and totally clean. Whenever water comes in contact with the rotors, I'm getting this black mess all over them. The pic shows them relatively clean because I wiped the water off after it rained yesterday. If I hadn't, they would be covered in black spots. I haven't heard back from them yet. Any idea what this is?
It can sit without having been driven and totally clean. Whenever water comes in contact with the rotors, I'm getting this black mess all over them. The pic shows them relatively clean because I wiped the water off after it rained yesterday. If I hadn't, they would be covered in black spots. I haven't heard back from them yet. Any idea what this is?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski