Sacrilege!!C2 centre caps can be seen in post no1 here:
https://forums.ukcougar.club/threads/8086-Whats-the-difference-between-me-and-you-C1-or-C2
Whatever tyre fitter attached that lead to the alloy's rim?
Don't they know to fit sticky weights on the inside of the wheel so the rim doesn't blister?