Car is a 3 year old Clio 1.2 16v with 32k miles (pads first changed at
18k).It failed it's MOT due to "Front brake discs corroded badly". The receptionist said it failed due to corrosion on the inboard side, which on inspection there is.
The corrosion has reduced the effective braking area (I've measured with a steel rule) from 1 7/8" to 1 5/16".
Was the inspector correct to fail it ?