[marc780]

Tojosa there's no answer that fits everybody. The fool proof way is i rotate my own tires every other oil change and i inspect the brakes then. And if you have enough lining left then you can go another 2 oil changes.
Toyota, who should know better, say the minimum thickness is 1 mm!!! I think the minimum, to me, is like 1/8" or 8 mm. But I just change mine when they are getting close like when there is like 3/16", pads are cheap, rotors are not so cheap.