I replaced my OEM front rotors today with Raybestos ones after having them warp for the 2nd time. Pretty easy job, and my pads looked like they still had 90% left so I did not replace them. Normally I'd say replace them if they are anywhere close to 50%, but the Toyota ones are low-dust, don't squeak, and have no real issues, it's their rotors that suck.
And before anyone says anything about why the pads should be replaced if the rotors are warped,
think first, OK? Warped rotors will not make your pads wear unevenly...if you are logical you'll figure it out.
Tools:
Jack, jackstand, tire chocks, #17 socket, Brake-cleaning fluid, coathanger.
Yeah that's really about all you need. Maybe a #14 socket for the bolts that bust the rotor off the hub...Hi-temp Neverseize if you want to use it.
Oh yeah, and the big disclaimer
These are BRAKES we're talking about, you need them to stop your car. If you are unsure of what you are doing, have a professional fix/repair your brakes for you. Always tighten calipers and lugnuts to factory specs, don't smoke under your car, save most of the beer for when you are done!
1) Slightly loosen the lugnuts
2) Chock both sides of the opposite rear wheel
3) jack up the car, support with jackstand as well
4) remove lug nuts and tire, you end up with this
You will be using the #17 socket on the bolt with the white arrow pointing at it, as well as one below it that you cannot see
5) Have the coathanger handy, in fact wrap it around the spring above before you need it, that way you just have to connect the end to throught the rotor. You do NOT want to let the rotor hang from the brake line.
After removing the 2 bolts behind the rotor, hang it on the coil spring
My rotors did not come off easily, even though it is a So Calif car and they were taken off by Toyota just 12,000 miles ago.
Thread two bolts into the holes on the rotor and turn them in to break the rotor loos from the rusty hub