I use Sonax wheel cleaner, but it only helps partially. Still gotta use elbow grease to get the wheel looking perfect.
P.S. 220M's are so annoying to clean.
2008 E92 M3: Sparkling Graphite | Bamboo Beige | 6MT | CF Roof | HRE | Eisenmann | BPM Sport | Swift | Arkym | Mode Carbon | M.Perf