just noticed that the rear disc is getting swept/worn on the ‘spokes’ by about 10mm front is fine. SLX caliper with pads from uber maybe , could the pads be too deep?(they fit into caliper ok) any other possible reasons?.160 rotor BTW That ad>>> has just started a disco brakes ad! 😯 its like im being watched thanks

Check the washers on the calliper mounting bolts, sometimes they need to be pushed away from the rotor as you are tightening them up