Sounds like the brake pads - shoes are worn down to medal and cutting into the
rotors and drums. Need to pull all 4 wheels off and check the brakes.
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.
The brake pads are worn out and need to be replaced. The grinding sound means your brakes are about to stop working.
They could, yes.
Brakes
What would cause a grinding noise after a tire is replaced and the brakes are not worn?
When it is time to change the brakes on your 2001 Mitsubishi Montero, they will make noises. There could be a grinding or squealing noise that you will hear.
They will make a grinding noise that's how you can tell.
Your pads or discs are worn. The brakes will fail soon if not replaced.
Yes they can make a grinding noise, if they are bad.
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,
Diod you check front brake pads