There is no definite answer to this question, as no one drives the same. However you could average 30,000 miles for the front rotors, and 60,000 for the rear.
You will need to remove the front tire and wheels from your 2002 Jeep liberty. Remove the brake pads and break assembly. Tap the rotors with a hammer or mallet. The rotors will come off. Reverse the process to install the new rotors.
Hire a mechanic!
No.
Yes. Although it confuses me as to why you would want to use old rotors for a brake job. New ones are cheap.
For sale brakes rotors
Get new front brake rotors, there cheap.
there either 10.28x1.33 or 11.20x1.33 You have to take off your wheel and check yourself Mazda Changed there rotors midyear 2002-2003 Kinda Confusing lol.
JUST TAKE IT TO MIDAS
Jack up and safely support front of vehicle. Remove front wheels. Remove front brake calipers and hang them with wire so not to damage brake hoses. Remove brake caliper brackets. Remove brake rotors. Rotors may need a little persuasion with a large hammer as they may be stuck/rusted in place. Reverse order to install rotors.
there are two bolts that hold brake calipers to a u shaped bracket, remove them and then remove the two bolts holding the u shaped bracket. The rotors will come off at this point.
How to Install Front Brake Pads Check related link below for picture and video
The minimum thickness number should be cast into the rotor.