Brake rotors

[mspivak@hyperdesk.com (Spivak, Marat)]

     I am looking for some wisdom on the subject of brake rotors.
     My '92 100 needs new front pads.  When I went to replace the pads, I 
     measured the rotor thickness.  It was slightly less then .9". The 
     service fiche says .9 is wear limit.  The rotors are in excellent 
     shape, not warped (no pulsation).  Should I replace them (this could 
     be big bucks, as the dealer might be the only source ~$100 each), or 
     should I just change the pads and wait for the rotors to warp?  What 
     do I risk other than warpage with rotors worn beyond documented wear 
     limit?
     
     Thanks for any advice,
     marat
     
     '90 100
     '92 100