Okay I have to admit this is kind of embarassing.
Yes I know there are no dumb questions just those you don't ask!!!
How do you tell the front disk pads are worn before they start to damage the rotors?
Pull the caliper off and look? I am familiar with the pad with detectors that rub and squeel when they touch the rotor but our trucks don't have these at least on the OEM pads. To tell a tail on my wifes car I put on some Bendix pads and did not notice the wear detectors was not right and they never touched until after the rotors had gotton scored. I guess having none is better than false security 



