Clymers and Haynes both show .14" as the minimum service limit for both front and rear totors. The text in the Haynes Manual also indicates that the minimum thickness is marked on each disc.
On my 93 K75S with ABS, the front discs are stamped "min .14" and the rear "min.18".
I purchased a used rear rotor from a guy who had it replaced because his independent garage said it was "Under thickness" at .17. I measured it at .1764.
Does anyone know if this is under thickness or not? If not, what are the stampings on the rotors about?
Also, my front rotors appear to have been thinner to begin with, do not appear badly worn at 27K miles, yet are still measuring near .1412.