you should not get pitting in a few weeks. Possibly when the face was machined it never got clear coated? I recently had a set of AluFelgen machined face wheels with no issues. Keep checking with AG they are a reputable company.
F10 550i Space Gray | Dinan Stage 5 | Eisenmann Race | ACS springs | P3 VIDI | 20" Ferric Grey 312 - Michelin PSS