Questions about changing rotors

[vc commodore]

I'd say the pads aren't flat......Having them touch on the edges and not the centre is a dead give away.....Personally, I'd be changing pads as well, which should solve the problem

 

[Calaber]

Another consideration. Did you clean the mounting surface and centre hub before installing the new discs? You could have slight run out, where a disc isn't sitting dead flat on the hub because of small dirt or corrosion deposits trapped between the two. lt's always good practice to thoroughly clean the hub thoroughly before fitting the disc.

 

[Dylan kingswood]

If replacing rotors obviously was a reason for doing so....., rule of thumb new rotors new pads