Drums and rotors do have wear out measurements, a minimum thickness for rotors and drums a maximum diameter.
But most people don't bother to measure this when they replace pads or shoes.
I really want to do it now but the cheapest I can find the rotors, calipers and pads is about $3,400.
But the Jewish side if me can't let go of that much $.
Keep looking and maybe I can find a used set cheaper.
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 4th Gen disc brake fbody rear end.