Track records seemingly can’t be deleted

If you’re trying to delete a track record from the “records” tab of the track detail view and it seems to pop up again afterwards, this is probably because another record of the same driver/car combination moved up. Let’s imagine the records for each driver/car combination like a stack. In the list of track records you only see the first item on this stack (which is the fastest time). Whenever you delete the top item, the next item will move up (and so on). So you’re probably not seeing the exact same record, but one which is a bit slower.