bad brake rotors or something worse?

[Trans Am]

Well, the rear right brake makes an annoying grinding sound and the pads are like 3 mm left.
I have noticed deep grooves that look like they were made by the rivets from the brake pads, but only on the inside of the rear right rotor and on the outside of the rear left rotor. the other sides are ok.

So before I change the rotors and pads, which cost $450 for the lot over here (ac delco 150 each rotor, and 120 for the pads ), I was wondering if there might be a bigger problem with the axles or something because of the uneven damage to the rotors. its like the rear axle is pushing on the brakes from right to left if that is even possible

car in question is the 95 formula

..and what about the prices for parts over here

[Kevin - Blown 95 TA]

Well you got 11 year old calipers and they might not center real well. Take them apart and go through them and see if the pins are all corroded and locked up. You might need new calipers too! More money, more fun!

[Trans Am]

More money, more fun!

Thanks for the reply, i am going to buy the rotors and pads tomorrow, i was worried that they will get ruined

How would i check if the calipers are still good?

I ve had the same problem with the 93 t/a ,but i am pretty much sure it was the pads not being replaced in time and the rivets scoring the rotors (front as well). Maybe it is a common problem with 4th gens?

If I find a more serious problem i will probably get rid of the Formula and save money to buy my dream car , a black 02 Trans Am WS6, it will be easier for me then to spend a lot of money repairing that one . and the 93 t/a is staying too

[Wild Willy]

the rear calipers (and the front!) need to be able to float freely on their bolts- they actually use a special high-temp lube. there is a piston in only one side of the caliper; pressure is applied to the other side pad because the whole caliper body moves opposite of the piston.
It is common for older cars calipers to get frozen in position by corrosion. There are actually aftermarket suppliers that make stainless steel brake bolts. It is more common for ther rears to freeze, because they move less, are used less in light braking.
You will see how the caliper is supposed to float after you disassemble it. Be sure to use the correct lube when you put it back to gether.

[Trans Am]

would you buy brake rotors from a junkyard?
I found rear rotors for $80 the pair, came off some crashed firebird. price is really good compared to the new ones but you never know with junkyard parts

[Wild Willy]

Mostly depends on condition and price- you want them to be thick- the more stock, the better- If they have been re-surfaced, no, thanks.
Even better if they were aftermarket slotted or drilled- you may get an upgraded part at a good price- in that case I probably would-

Mostly, with rotors, you want mass- as in thermal mass, to disapate the heat produced by braking. That is why high-performance stuff is bigger- able to soak up more energy