Rear Brake Rotors for 2000 (how to replace)

Hey guys,
So my rear rotors are rusty and Im thinking of replacing them myself (dealership quoted $450 for that).

I found some sites that sell OEM brake rotors for roughly $50-60 a peace but I cant find the best site to purchase them from. I see a lot of people recommending St. Charles here but Id rather go with an online order system than to call in (Just the way I am :/). So if anyone could recommend some reliable sites, thatd be appreciated.

Yesterday, I popped out my rear wheel and took a look at the brakes (keep in my this is a first for me). I wasnt sure how to take off the rotor. Im guessing I need to loosen 7-8 nuts from the back and somehow make sure caliper isnt holding in (not sure how to do that since the car is in Park when I lift it).

I also saw two tubes. One for caliper and one leading to the rotor (I believe). I was wondering which one I need to take off and how.

If anyone could guide me through some of the beginning steps, I could probably figure out everything from there. Id also document everything with my camera and post pics online for anyone in the future who needs to do some brake work.

Thank you,
Dimitry

I'm thinking that when you remove the caliper they simply slide off the hub.

When you say they are rusty, do you mean the braking surface or just the rest of the rotor? You don't need to replace them for just a bit of surface rust. The new ones will start to rust in a matter of days or weeks.

There two tubes I would think are for brake fluid and the other for ABS. Those dont need to be removed. Usually you just undo 2 bolts that hold the caliper in place and remove the caliper. Sometimes the rotor will come off then or sometimes you have to remove the caliper bracket that is usually held on by another 2 larger bolts.