0.03mm lateral, 0.05mm radial sounds more like run out specs for the hub flange to me? Certainly matches the max hub run out for MBs from the '90s (top of pg 2)... http://www.w124performance.com/service/w124CD2/Program/Chassis/33-0010.pdf
Disc specs (once fitted at least)* typically only mention lateral run out, same models of MB... http://www.w124performance.com/service/w124CD2/Program/Chassis/42-0220.pdf but personally i think 0.12mm used for everything except the 500e/e500 is a bit sloppy, 0.08mm is more like it as a generic max runout IMO and less is obviously better
Obviously once the brakes have been used a dial gauge can't tell the difference between thickness variation due to uneven wear/uneven pad transfer, excessive runout and the mythical warped disc
* decent brands like ATE claim 0.03mm max lateral runout for the discs themselves and a thickness tolerance better than 0.01mm but obviously if measuring runout once fitted the hub tolerance is included and can magnify or cancel things out some...
ETA http://www.ate-freios.com.br/www/do..._download_channel/bd_praesentation_pdf_en.pdf
Disc specs (once fitted at least)* typically only mention lateral run out, same models of MB... http://www.w124performance.com/service/w124CD2/Program/Chassis/42-0220.pdf but personally i think 0.12mm used for everything except the 500e/e500 is a bit sloppy, 0.08mm is more like it as a generic max runout IMO and less is obviously better
Obviously once the brakes have been used a dial gauge can't tell the difference between thickness variation due to uneven wear/uneven pad transfer, excessive runout and the mythical warped disc
* decent brands like ATE claim 0.03mm max lateral runout for the discs themselves and a thickness tolerance better than 0.01mm but obviously if measuring runout once fitted the hub tolerance is included and can magnify or cancel things out some...
ETA http://www.ate-freios.com.br/www/do..._download_channel/bd_praesentation_pdf_en.pdf