Do I replace the rotors each time I replace the pads?

Are you suggesting disks should always be replaced at the same time as pads?

Mostly. If you measure the rotors and they're still within spec, pass a visual inspection (not scored, spalted or generally ickky) and you're happy with the way they feel (no wobbles or pulsing when braking) then you can probably re-use them. But you get the caliper off and notice the rotor is bad you'll have to do this job again.

Do it right, once. Have the rotors in stock and if you don't need to replace them this time good for you.

- Richard Sexton, Aug '06