Shearwater Missile
Veteran
As Yellow saddle said possibly impact damage. The first picture with the tyre on looks like the tyre is cracked on it`s casing, I may be wrong. Although the Aksium is at the lower end of the Mavic line up I would not call them budget. I have a pair and were an upgrade over stock wheels. These are on my winter bike and have done over 7000 miles without issue, despite curbing them when I had a fall. Evans must be your first port of call as photos are not easy to take of problems like this. Good luck anyway.