[BOSSEGO]

Mate I had the same brand rotors on my fg xr8 sedan. GET RID OF THEM is all can say. The first set I bought were the passivated gold coated ones and I had same issue, they weren't machined true on the face that bolts against the hubs. it took me 4 different brakes shops to finally diagnose that, I contacted RDA about issues and they sent me another set same problem but not as bad. I eventually went and bought some DBA T3 rotors have not had a problem since fitting them. I think RDA's quality control bloke must have been on holidays when the 2 sets I bought were made.