Hello all,    Currently having a dispute with my local Skoda main dealer regarding corroded rear brake discs.    My car is a Superb '66' plate 1.4 TSI (150nhp), the mileage has just turned 22.5k.    Given the car's young age and mileage covered, I do not expect both rear disks to be badly corroded and cause juddering when braking.   When I took my car in last week, I felt a bit fobbed off with 'general wear and tear' reasoning, and that, perhaps understand