Just got these ACDelco rotors installed on my ATS-V and wanted to share some thoughts.

First off - the fit is PERFECT. Like, OEM-level perfect. No weird vibrations or noises after installation, which was a huge relief. My mechanic said they balanced really well during the install.

Performance has been solid so far. Braking feels smooth and consistent, even during some... let's call them 'spirited' driving sessions. Definitely notice less brake dust too compared to my old rotors.

BUT here's the catch - these are pricey! I saw them for like 15% cheaper on other sites after I already bought them (facepalm). Still happy with the quality though.

One weird thing - the listing said passenger side but what arrived was actually the driver side rotor. Thankfully it was the correct part for my car, just mislabeled maybe?

Overall: Great GM-approved quality if you don't mind paying a bit extra for peace of mind.