On mine it was run out on the actual hub flange where the disc fits, got 3 thou run out, so by the time it was at the edge of the much larger disc it was silly amount, had the flanges skimmed, end of problem, asked the guy doing it if they could do things this big, he laughed and said we can do up to 6 METRES diameter, they do mainly food industry machines!!
I also had run out that was machined in by hi spec, due to them being as accurate and truthful as a politician!!
tabetha