John- This applies to 2002-08 Explorer Sport Tracs.
I'm using OEM rotors on my '05 XLS RWD with 53K. (Bought used at at 46K)
Replaced the stock pads with Wagner Thermo Quiet Ceramics.
Smooth, quiet, and almost dust free. Highly recommended, check Amazon.
Minimum front rotor thickness is 24.5 mm. (25.1 mm before turning)
Minimum rear disc rotor thickness is 11 mm. (11.6 mm before turning)
Good luck.