Brake Discs Thickness

[vtc]

Hey all.. Wanted to check my brake discs thickness to see whether its worth machning or buying new ones. Looking in the service manual it reads...

Front Discs 21.0 (0.83)
Rear Discs 8.0 (0.31)

Does anybody know what measurement this is in or how/where you measure?

Thanks

[TRU32U]

mm
measure by this special thingo tool i dunno what u call it.
lol sorri not much help realli

[kOncept]

Yeah measurement is in mm, the tool you use is called a micrometer, you're measuring the thickness of the rotor so basically from one side to the other (the 2 sides which come in contact with the brake pads)...

measure several points on the rotor just in case there's variation in thickness.

[Slow96GSR]

Front max refinish limit 19mm (.75"), Rear max refinish 8mm (.32")

See here.