Brake Vibrations

The brakes on my 89 190E 2.6 are giving me a strange vibration(At least I think its the brakes). It happens after a little while of driving I guess after they warm up. I can sometimes pull up to a light nice and slow and it will give the loud vibration noise. It only makes it coming to a stop and more often when I'm stopping at a light on a hill. I don't know how to describe the noise. Its almost like a deceleration noise when down shifting to brake but I can feel it in the brakes and if I pull off the pedal it stops. Its not a major problem but if anyone has any ideas I'd like to hear em.Thanks

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Rob C
89 190E 2.6
Beige

[Benzmac]

If the rotors have any ridge, they may be hitting the edge of the sensor. It will cause a weird noise.

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
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I would not rule out any rotor problems but would that cause a significant vibration? And also have to do with heating up? Thanks again

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Rob C
89 190E 2.6
Beige