Car is booked in next week to try and remove paint defect from door (without re-spray) under warranty.
Whilst it is in they will also inspect the alloys. They did say that they have seen this issue on 5 series alloys but never on the new 3 series.
My gut feeling at the minute is they wont be able to fix the paint defect without a re-spray and they will say that the alloy problem will not be covered under the warranty.