[MattSAU2XR8]

I didn't get the PBR discs from you Matt - by rights I should have just bought some DBA discs from you in the first place - like they say poor man pays twice. I did check them with a dial gauge, after cleaning the hubs with a wire brush, and they were no good. Also tried indexing them and no matter where I put them the runout was the same. Also got a local race mechanic to have a look at them - he agreed with me, and he's pretty good, in his workshop he's got a race car that he built all by himself - it's basically a Nascar with a 6.5 litre mid mounted V8, full spaceframe, transaxle, enormous brakes, laps faster than a current touring car when he takes it out :-) After I sanded back the mating surfaces on the discs I managed to get them all under 0.04 mm runout and end of vibration, but next time I'll just buy DBAs and be done with it.