Just wanted to post and say that Hyundai replaced my alloys under warranty (with 1 week of it left).
Some photos...
Old wheel:
New wheel:
How did you go about it with the dealer plz?
I just phoned them and told them the alloys had bubbling on the leading edges. They arranged an appointment for a few days after, telling me to wash the wheels before I came in. I did that, they took photos of each wheel and sent them to Hyundai, then phoned me a week or so later to say the new wheels were in and booked me in for the change.
No resistance at all to it being warranty work.