[QUOTE]Originally posted by aldedmon
[B]My 3 coin rule
If your brake light is on and you have a lip whose thickness is no more than that a "Dime" - I might used them again.
"Pennys" - its about time to change them
"Nickel" - Regardless brake light or no hurry up and change em'


aldemon,

Here are the official thicknesses of the US coins:

Penny 1.57 mm
Nickel 1.98 mm
Dime 1.35 mm


You method looks spot on! Another post mentioned that for his rotors, original thickness was 25mm, replacement thickness was 23mm!!

glenmore
1991 300CE