To anyone looking at getting R1 Carbon GEOMET series rotors, beware that they are NOT selling you high carbon rotors. The model number they are selling (for OEM blank) is 60421038 (front) 60421039 (rear). These are NOT the high-carbon version. After finding out they are selling DFC rotors...
stingerforum.org
For blanks or any one-piece rotors I would go with DBA or Centric.
Never go with R1, they are garbage. I had a set of front pads from them on my STS what literally lasted less than 10k miles, it was totally ridiculous.
Never go with R1, they are garbage. I had a set of front pads from them on my STS what literally lasted less than 10k miles, it was totally ridiculous.