Poor Quality Chrome

Factory chrome is usually much better than aftermarket wheel chrome [China chrome].
Good chroming is a 3 step process. And expensive. It takes a lot of electricity for the chroming process. And it is deposited in different thicknesses depending in shapes, requiring knowledge and experience.
Clear coating and chroming of aluminum rims lasts only about 5 years in salt country. About the same for powder coating, but sooner if there is a chip in the paint.