your brakes are probably sticking and either they need to be replaced or your rotors are bad if its not one of those two it could be somthing as simple as the caliber was put on the rotor crooked or the caliber is warped whicch is very rare so most likely you brake to hard and your rotors are wearing unevenly
brakes or rear axle problems.
97 grand am rubbing/grinding noise from right front that is not wheelbearing or brakes
It could be brakes, bearings or something else altogether.
Most times, the squeaking and rubbing noises are caused by brake pad wear, but you say the brakes are fine. Otherwise, if by constant rotation speed you mean the squeaking/rubbing noise is present even when the brakes are not applied, you might want to get the wheel bearing inspected
Brakes
What would cause a grinding noise after a tire is replaced and the brakes are not worn?
sounds like you need pads cheap fix
Normally a rusty rotor would not make a grinding noise. A grinding noise from the brakes usually indicated that the pads or shoes are worn down.
Your pads or discs are worn. The brakes will fail soon if not replaced.
The brake pads are worn out and need to be replaced. The grinding sound means your brakes are about to stop working.
If you suspect something, get them checked. If you get vibration while applying the brakes, get them checked. If you get grinding noise from the brakes, get them checked.
Could be, in need of brakes or wheel bearing failure,