Any one have knowledge of and/or experience with R1 Concepts rotors and pads?
Exactly, you have to actually read through the 1 and 2 star comments on Amazon now because people are frigging morons and order the wrong part or don't know how to install. Or the packaging was missing the shrink wrap.To get an idea you'd need to read the 1 & 2 star ratings. I have found usually 25% are people that say things such as: Didn't like, hard to install, package was damaged and my favorite: Worked.
I have no idea on the R1 stuff but do run the Z36 and they have been great.