BMW e90 Front brake disk (rotors) skimmed- Brake shudder

My car has 200 000KM an the front disk's (rotors) seem like they have got grooves or worn spots causing shuddering while braking. I stripped them off and took them in to be skimmed (Really cheap about ZAR175 each)
Results were amazing, shudder gone!

[@lifesahobby]

Did it work

[@JohnChristensenZA]

Worked like a charm!