@leonfr89 - The alloys on the
Cupra Leon V1 are diamond cut (described in the
brochure as ‘18″ ‘GARBI’ alloy wheels Machined in Sport Black / Silver’), so what you’ve described as delamination would appear to be the clear coat lacquer having lifted and come away from the diamond cut surface. There’s also a small white spot on the very right hand edge of the diamond cut section; difficult to tell from the picture, but that could be the start of white worm corrosion as a result of small stone chip that may have broken the protective lacquer surface.
As for the delamination / lacquer peel; as
@James_R has said, that wheel may have been refurbished and the refurbishment was of a poor quality and hasn’t lasted. Alternatively, if that wheel has had a new tyre fitted, it could be the result of tyre fitter damage; the very edge of the rim along that section might have been slightly damaged by a tyre fitting machine or a tyre lever and it’s now developed into a more extensive area of damage.
To get a good quality professional refurbishment of the wheel, you’re probably looking at a cost in the region of £100-£120 plus VAT.
Diamond cut alloys aren’t renowned for good durability of the diamond cut surface and many (most?) succumb to white worm corrosion after 2-3 years, especially if they’re on a car used as a daily driver during the winter months. They are also quite susceptible to tyre fitter damage. I personally really dislike diamond cut alloys; my car has them but I would never have them by choice, although manufacturers persist in fitting them to many of the cars in their vehicle range. Mine alloys are carefully inspected each timeI clean my car and any stone chip damage is repaired there and then in an effort to keep white worm corrosion damage at bay.
